diff --git a/application/src/components/dashboard/Header.tsx b/application/src/components/dashboard/Header.tsx
index 9c8888e..ed5b542 100644
--- a/application/src/components/dashboard/Header.tsx
+++ b/application/src/components/dashboard/Header.tsx
@@ -119,6 +119,9 @@ export const Header = ({
             <DropdownMenuItem onClick={() => setLanguage("ja")} className={language === "ja" ? "bg-accent" : ""}>
               {t("japanese")}
             </DropdownMenuItem>
+            <DropdownMenuItem onClick={() => setLanguage("zhcn")} className={language === "zhcn" ? "bg-accent" : ""}>
+              {t("simplifiedChinese")}
+            </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
         
@@ -212,4 +215,4 @@ export const Header = ({
       </div>
     </header>
   );
-};
\ No newline at end of file
+};
diff --git a/application/src/translations/de/common.ts b/application/src/translations/de/common.ts
index 0e69d07..070ace3 100644
--- a/application/src/translations/de/common.ts
+++ b/application/src/translations/de/common.ts
@@ -8,6 +8,7 @@ export const commonTranslations: CommonTranslations = {
   english: "Englisch",
   khmer: "Khmer",
   german: "Deutsch",
+  simplifiedChinese: "Simplified Chinese",
   goodMorning: "Guten Morgen",
   goodAfternoon: "Guten Nachmittag",
   goodEvening: "Guten Abend",
diff --git a/application/src/translations/en/common.ts b/application/src/translations/en/common.ts
index 3bdbb1a..4c02002 100644
--- a/application/src/translations/en/common.ts
+++ b/application/src/translations/en/common.ts
@@ -8,6 +8,7 @@ export const commonTranslations: CommonTranslations = {
   english: "English",
   khmer: "Khmer",
   german: "Deutsch",
+  simplifiedChinese: "Simplified Chinese",
   goodMorning: "Good morning",
   goodAfternoon: "Good afternoon",
   goodEvening: "Good evening",
diff --git a/application/src/translations/index.ts b/application/src/translations/index.ts
index 8ae73b8..fdd550e 100644
--- a/application/src/translations/index.ts
+++ b/application/src/translations/index.ts
@@ -2,14 +2,16 @@ import enTranslations from './en';
 import kmTranslations from './km';
 import deTranslations from './de';
 import jaTranslations from './ja';
+import zhcnTranslations from './zhcn';
 
-export type Language = "en" | "km" | "de" | "ja";
+export type Language = "en" | "km" | "de" | "ja" | "zhcn";
 
 export const translations = {
   en: enTranslations,
   km: kmTranslations,
   de: deTranslations,
   ja: jaTranslations,
+  zhcn: zhcnTranslations,
 };
 
 // Type for accessing translations by module and key
diff --git a/application/src/translations/ja/common.ts b/application/src/translations/ja/common.ts
index dedc536..c8f0ce7 100644
--- a/application/src/translations/ja/common.ts
+++ b/application/src/translations/ja/common.ts
@@ -7,6 +7,7 @@ export const commonTranslations: CommonTranslations = {
   english: "English",
   khmer: "Khmer", 
   german: "Deutsch",
+  simplifiedChinese: "简体中文",
   japanese: "日本語",
   goodMorning: "おはようございます",
   goodAfternoon: "こんにちは",
@@ -26,4 +27,4 @@ export const commonTranslations: CommonTranslations = {
   description: "説明",
   success: "成功",
   error: "エラー",
-};
\ No newline at end of file
+};
diff --git a/application/src/translations/km/common.ts b/application/src/translations/km/common.ts
index 84ed44c..47219ce 100644
--- a/application/src/translations/km/common.ts
+++ b/application/src/translations/km/common.ts
@@ -8,6 +8,7 @@ export const commonTranslations: CommonTranslations = {
   english: "អង់គ្លេស",
   khmer: "ខ្មែរ",
   german: "Deutsch",
+  simplifiedChinese: "简体中文",
   goodMorning: "អរុណសួស្តី",
   goodAfternoon: "ទិវាសួស្តី",
   goodEvening: "សាយណ្ហសួស្តី",
diff --git a/application/src/translations/types/common.ts b/application/src/translations/types/common.ts
index fc16c53..3e94fe7 100644
--- a/application/src/translations/types/common.ts
+++ b/application/src/translations/types/common.ts
@@ -5,6 +5,7 @@ export interface CommonTranslations {
   language: string;
   english: string;
   khmer: string;
+  simplifiedChinese: string;
   goodMorning: string;
   goodAfternoon: string;
   goodEvening: string;
diff --git a/application/src/translations/zhcn/about.ts b/application/src/translations/zhcn/about.ts
new file mode 100644
index 0000000..3914510
--- /dev/null
+++ b/application/src/translations/zhcn/about.ts
@@ -0,0 +1,18 @@
+
+import { AboutTranslations } from '../types/about';
+
+export const aboutTranslations: AboutTranslations = {
+  aboutCheckcle: "关于 Checkcle",
+  systemDescription: "Checkcle 是一个开源监控平台，可提供有关服务器和服务健康状况的实时洞察、事件管理以及透明化运营。以 MIT 许可证发布。",
+  systemVersion: "系统版本",
+  license: "许可证",
+  mitLicense: "MIT 许可证",
+  links: "链接",
+  viewOnGithub: "在 GitHub 上查看",
+  viewDocumentation: "查看文档",
+  followOnX: "在 X 上关注",
+  joinDiscord: "加入 Discord",
+  quickActions: "快速操作",
+  quickActionsDescription: "快速访问常用的监控操作和功能。选择下面的操作开始。",
+  quickTips: "快速提示",
+};
diff --git a/application/src/translations/zhcn/common.ts b/application/src/translations/zhcn/common.ts
new file mode 100644
index 0000000..0f5b71e
--- /dev/null
+++ b/application/src/translations/zhcn/common.ts
@@ -0,0 +1,30 @@
+
+import { CommonTranslations } from '../types/common';
+
+export const commonTranslations: CommonTranslations = {
+  welcome: "欢迎",
+  logout: "注销",
+  language: "语言",
+  english: "English",
+  khmer: "Khmer",
+  german: "Deutsch",
+  simplifiedChinese: "简体中文",
+  goodMorning: "早上好",
+  goodAfternoon: "下午好",
+  goodEvening: "晚上好",
+  profile: "个人资料",
+  settings: "设置",
+  documentation: "文档",
+  notifications: "通知",
+  close: "关闭",
+  cancel: "取消",
+  view: "查看",
+  edit: "编辑",
+  delete: "删除",
+  status: "状态",
+  time: "时间",
+  title: "标题",
+  description: "描述",
+  success: "成功",
+  error: "错误",
+};
diff --git a/application/src/translations/zhcn/incident.ts b/application/src/translations/zhcn/incident.ts
new file mode 100644
index 0000000..8903f2d
--- /dev/null
+++ b/application/src/translations/zhcn/incident.ts
@@ -0,0 +1,55 @@
+
+import { IncidentTranslations } from '../types/incident';
+
+export const incidentTranslations: IncidentTranslations = {
+  incidentManagement: '事件管理',
+  incidentsManagementDesc: '跟踪和管理服务事件及其解决方案',
+  unresolvedIncidents: '未解决',
+  resolvedIncidents: '已解决',
+  activeIncidents: '活动事件',
+  criticalIssues: '关键问题',
+  avgResolutionTime: '平均解决时间',
+  noIncidents: '没有活动事件',
+  createIncident: '创建事件',
+  investigating: '调查中',
+  identified: '已识别',
+  monitoring: '监控',
+  resolved: '已解决',
+  scheduleIncidentManagement: '计划与事件管理',
+  incidentName: '事件名称',
+  incidentStatus: '事件状态',
+  highPriority: '高优先级',
+  configurationSettings: '配置设置',
+  incidentCreatedSuccess: '事件创建成功',
+  basicInfo: '基本信息',
+  serviceId: '服务 ID',
+  assignedTo: '分配给',
+  unassigned: '未分配',
+  timeline: '时间线',
+  incidentTime: '事件时间',
+  resolutionTime: '解决时间',
+  systems: '系统',
+  noSystems: '没有受影响的系统',
+  impactAnalysis: '影响分析',
+  rootCause: '根本原因',
+  resolutionSteps: '解决步骤',
+  lessonsLearned: '经验',
+  resolutionDetails: '解决详情',
+  assignment: '分配',
+  download: '下载',
+  downloadPdf: '下载 PDF',
+  print: '打印',
+  confidentialNote: '此文档为机密文件，仅供内部使用。',
+  generatedOn: '生成时间',
+  enterResolutionSteps: '输入解决此事件的步骤',
+  enterLessonsLearned: '输入从此事件中学到的经验',
+  editIncident: '编辑事件',
+  editIncidentDesc: '更新此事件的详细信息',
+  updating: '更新中...',
+  update: '更新',
+  create: '创建',
+  creating: '创建中...',
+  configuration: '配置',
+  failedToUpdateStatus: '更新状态失败',
+  inProgress: '进行中',
+};
diff --git a/application/src/translations/zhcn/index.ts b/application/src/translations/zhcn/index.ts
new file mode 100644
index 0000000..93397fc
--- /dev/null
+++ b/application/src/translations/zhcn/index.ts
@@ -0,0 +1,25 @@
+
+import { Translations } from '../types';
+import { commonTranslations } from './common';
+import { menuTranslations } from './menu';
+import { loginTranslations } from './login';
+import { aboutTranslations } from './about';
+import { servicesTranslations } from './services';
+import { maintenanceTranslations } from './maintenance';
+import { incidentTranslations } from './incident';
+import { sslTranslations } from './ssl';
+import { settingsTranslations } from './settings';
+
+const zhcnTranslations: Translations = {
+  common: commonTranslations,
+  menu: menuTranslations,
+  login: loginTranslations,
+  about: aboutTranslations,
+  services: servicesTranslations,
+  maintenance: maintenanceTranslations,
+  incident: incidentTranslations,
+  ssl: sslTranslations,
+  settings: settingsTranslations
+};
+
+export default zhcnTranslations;
diff --git a/application/src/translations/zhcn/login.ts b/application/src/translations/zhcn/login.ts
new file mode 100644
index 0000000..5c34f65
--- /dev/null
+++ b/application/src/translations/zhcn/login.ts
@@ -0,0 +1,23 @@
+
+import { LoginTranslations } from '../types/login';
+
+export const loginTranslations: LoginTranslations = {
+  signInToYourAccount: "登录您的账号",
+  dontHaveAccount: "没有账号？",
+  createOne: "创建一个",
+  signInWithGoogle: "使用 Google 登录",
+  orContinueWith: "或",
+  email: "邮箱",
+  password: "密码",
+  forgot: "忘记密码？",
+  signIn: "登录",
+  signingIn: "登录中...",
+  loginSuccessful: "登录成功",
+  loginSuccessMessage: "您已成功登录。",
+  loginFailed: "登录失败",
+  authenticationFailed: "身份验证失败",
+  bySigningIn: "通过登录，您同意我们的",
+  termsAndConditions: "条款与条件",
+  and: "和",
+  privacyPolicy: "隐私政策",
+};
diff --git a/application/src/translations/zhcn/maintenance.ts b/application/src/translations/zhcn/maintenance.ts
new file mode 100644
index 0000000..7dd51bd
--- /dev/null
+++ b/application/src/translations/zhcn/maintenance.ts
@@ -0,0 +1,68 @@
+
+import { MaintenanceTranslations } from '../types/maintenance';
+
+export const maintenanceTranslations: MaintenanceTranslations = {
+  scheduledMaintenance: '计划维护',
+  scheduledMaintenanceDesc: '查看和管理您系统和服务的计划维护窗口',
+  upcomingMaintenance: '即将',
+  ongoingMaintenance: '进行中',
+  completedMaintenance: '已完成',
+  createMaintenanceWindow: '创建维护',
+  totalScheduledHours: '总计划小时',
+  maintenanceName: '维护名称',
+  maintenanceStatus: '状态',
+  scheduledStart: '计划开始时间',
+  scheduledEnd: '计划结束时间',
+  affectedServices: '受影响的服务',
+  impact: '影响',
+  minor: '次要',
+  major: '主要',
+  critical: '关键',
+  none: '无',
+  actions: '操作',
+  scheduled: '计划',
+  inprogress: '进行中',
+  completed: '已完成',
+  cancelled: '已取消',
+  markAsInProgress: '标记为进行中',
+  markAsCompleted: '标记为已完成',
+  markAsCancelled: '标记为已取消',
+  confirmDelete: '确认删除',
+  deleteMaintenanceConfirmation: '您确定要删除此维护窗口吗？',
+  thisActionCannotBeUndone: '此操作无法撤销。',
+  maintenanceDeleted: '维护已删除',
+  maintenanceDeletedDesc: '维护窗口已成功删除。',
+  errorDeletingMaintenance: '删除维护窗口时出错。',
+  statusUpdated: '状态更新',
+  maintenanceStatusUpdated: '维护状态已成功更新。',
+  errorUpdatingMaintenanceStatus: '更新维护状态时出错。',
+  createMaintenance: '创建维护',
+  createMaintenanceDesc: '为您的服务计划新的维护窗口',
+  enterTitle: '输入维护标题',
+  enterDescription: '输入详细的维护描述',
+  startTime: '开始时间',
+  endTime: '结束时间',
+  selectDate: '选择日期',
+  enterAffectedServices: '输入受影响的服务',
+  separateServicesWithComma: '用逗号分隔多个服务',
+  priority: '优先级',
+  selectPriority: '选择优先级',
+  selectStatus: '选择状态',
+  selectImpact: '选择影响',
+  notifySubscribers: '通知订阅者',
+  notifySubscribersDesc: '当此维护开始时，向所有订阅者发送通知',
+  maintenanceCreated: '创建维护',
+  maintenanceCreatedDesc: '维护窗口已成功计划。',
+  errorCreatingMaintenance: '创建维护窗口时出错。',
+  errorFetchingMaintenanceData: '获取维护数据时出错。',
+  low: '低',
+  medium: '中',
+  high: '高',
+  created: '创建',
+  lastUpdated: '最后更新',
+  subscribersWillBeNotified: '订阅者将在维护开始时收到通知',
+  noNotifications: '不会发送通知',
+  noScheduledMaintenance: '没有计划的维护',
+  noMaintenanceWindows: '没有此时间段的维护窗口。通过点击“创建维护”按钮创建一个。',
+  maintenanceCreatedSuccess: '维护窗口创建成功',
+};
diff --git a/application/src/translations/zhcn/menu.ts b/application/src/translations/zhcn/menu.ts
new file mode 100644
index 0000000..30c7ab0
--- /dev/null
+++ b/application/src/translations/zhcn/menu.ts
@@ -0,0 +1,21 @@
+
+import { MenuTranslations } from '../types/menu';
+
+export const menuTranslations: MenuTranslations = {
+  uptimeMonitoring: "Uptime 监控",
+  instanceMonitoring: "实例监控",
+  sslDomain: "SSL & 域名",
+  scheduleIncident: "计划与事件",
+  operationalPage: "运营页面",
+  reports: "报告",
+  regionalMonitoring: "区域监控",
+  settingPanel: "设置面板",
+  generalSettings: "一般设置",
+  userManagement: "用户管理",
+  notificationSettings: "通知设置",
+  alertsTemplates: "警报模板",
+  rolesManagement: "角色管理",
+  dataRetention: "数据保留",
+  backupSettings: "备份设置",
+  aboutSystem: "关于系统",
+};
diff --git a/application/src/translations/zhcn/services.ts b/application/src/translations/zhcn/services.ts
new file mode 100644
index 0000000..7cf86c7
--- /dev/null
+++ b/application/src/translations/zhcn/services.ts
@@ -0,0 +1,12 @@
+
+import { ServicesTranslations } from '../types/services';
+
+export const servicesTranslations: ServicesTranslations = {
+  serviceName: "服务名称",
+  serviceType: "服务类型",
+  serviceStatus: "服务状态",
+  responseTime: "响应时间",
+  uptime: "Uptime",
+  lastChecked: "最后检查时间",
+  noServices: "没有符合您筛选条件的服务。",
+};
diff --git a/application/src/translations/zhcn/settings.ts b/application/src/translations/zhcn/settings.ts
new file mode 100644
index 0000000..8f86b1b
--- /dev/null
+++ b/application/src/translations/zhcn/settings.ts
@@ -0,0 +1,52 @@
+
+import { SettingsTranslations } from '../types/settings';
+
+export const settingsTranslations: SettingsTranslations = {
+  // Tabs
+  systemSettings: "系统设置",
+  mailSettings: "邮件设置",
+  
+  // System Settings
+  appName: "应用名称",
+  appURL: "应用 URL",
+  senderName: "发送者名称",
+  senderEmail: "发送者邮箱地址",
+  hideControls: "隐藏控件",
+  
+  // Mail Settings
+  smtpSettings: "SMTP 配置",
+  smtpEnabled: "启用 SMTP",
+  smtpHost: "SMTP 主机",
+  smtpPort: "SMTP 端口",
+  smtpUsername: "SMTP 用户名",
+  smtpPassword: "SMTP 密码",
+  smtpAuthMethod: "认证方法",
+  enableTLS: "启用 TLS",
+  localName: "本地名称",
+  
+  // Test Email
+  testEmail: "测试邮箱",
+  sendTestEmail: "发送测试邮箱",
+  emailTemplate: "邮箱模板",
+  verification: "验证",
+  passwordReset: "密码重置",
+  confirmEmailChange: "确认邮箱变更",
+  otp: "OTP",
+  loginAlert: "登录警报",
+  authCollection: "认证集合",
+  selectCollection: "选择集合",
+  toEmailAddress: "收件人邮箱地址",
+  enterEmailAddress: "输入收件人邮箱地址",
+  sending: "发送中...",
+  
+  // Actions and status
+  save: "保存变更",
+  saving: "保存中...",
+  settingsUpdated: "设置已成功更新",
+  errorSavingSettings: "保存设置时出错",
+  errorFetchingSettings: "加载设置时出错",
+  testConnection: "测试连接",
+  testingConnection: "测试连接中...",
+  connectionSuccess: "连接成功",
+  connectionFailed: "连接失败"
+};
diff --git a/application/src/translations/zhcn/ssl.ts b/application/src/translations/zhcn/ssl.ts
new file mode 100644
index 0000000..a01249e
--- /dev/null
+++ b/application/src/translations/zhcn/ssl.ts
@@ -0,0 +1,116 @@
+
+import { SSLTranslations } from '../types/ssl';
+
+export const sslTranslations: SSLTranslations = {
+  // Page and section titles
+  sslDomainManagement: "SSL & 域名管理",
+  monitorSSLCertificates: "监控和管理您的域名的 SSL 证书",
+  addSSLCertificate: "添加 SSL 证书",
+  editSSLCertificate: "编辑 SSL 证书",
+  deleteSSLCertificate: "删除 SSL 证书",
+  sslCertificateDetails: "SSL 证书详情",
+  detailedInfo: "关于",
+  viewDetailedInformation: "查看详细信息",
+
+  // Status related
+  valid: "有效",
+  expiringSoon: "即将过期",
+  expired: "已过期",
+  pending: "待处理",
+
+  // Statistics and cards
+  validCertificates: "有效证书",
+  expiringSoonCertificates: "即将过期",
+  expiredCertificates: "已过期",
+
+  // Form fields
+  domain: "域",
+  domainName: "域名",
+  domainCannotChange: "域名创建后不能更改",
+  warningThreshold: "警告阈值",
+  warningThresholdDays: "警告阈值（天）",
+  expiryThreshold: "过期阈值",
+  expiryThresholdDays: "过期阈值（天）",
+  notificationChannel: "通知渠道",
+  chooseChannel: "选择通知渠道",
+  whereToSend: "通知渠道",
+  daysBeforeExpiration: "过期前警告天数",
+  daysBeforeCritical: "过期前关键警告天数",
+  getNotifiedExpiration: "获取证书即将过期的通知",
+  getNotifiedCritical: "获取证书即将过期的关键通知",
+
+  // Table headers and fields
+  issuer: "发行机构",
+  expirationDate: "过期日期",
+  daysLeft: "剩余天数",
+  status: "状态",
+  lastNotified: "最后通知时间",
+  actions: "操作",
+  validFrom: "有效从",
+  validUntil: "有效至",
+  validityDays: "有效期天数",
+  validityPeriod: "有效期",
+  organization: "组织",
+  commonName: "通用名称",
+  serialNumber: "序列号",
+  algorithm: "算法",
+  subjectAltNames: "主题备用名称",
+  subjectAlternativeNames: "主题备用名称",
+  resolvedIP: "解析 IP",
+  issuedTo: "颁发给",
+  days: "天",
+  
+  // Buttons and actions
+  addDomain: "添加域名",
+  refreshAll: "刷新所有",
+  cancel: "取消",
+  addCertificate: "添加证书",
+  check: "检查",
+  view: "查看",
+  edit: "编辑",
+  delete: "删除",
+  close: "关闭",
+  saveChanges: "保存更改",
+  updating: "更新中",
+  
+  // Sections in detail view
+  basicInformation: "基本信息",
+  validity: "有效期",
+  issuerInfo: "发行机构信息",
+  technicalDetails: "技术详情",
+  technicalInformation: "技术信息",
+  monitoringConfig: "监控配置",
+  monitoringConfiguration: "监控配置",
+  recordInfo: "记录信息",
+  certificateDetails: "证书详情",
+  
+  // Notifications and messages
+  sslCertificateAdded: "SSL 证书添加成功",
+  sslCertificateUpdated: "SSL 证书更新成功",
+  sslCertificateDeleted: "SSL 证书删除成功",
+  sslCertificateRefreshed: "SSL 证书为 {domain} 刷新成功",
+  allCertificatesRefreshed: "所有 {count} 证书刷新成功",
+  someCertificatesFailed: "{success} 证书刷新成功，{failed} 失败",
+  failedToAddCertificate: "添加 SSL 证书失败",
+  failedToLoadCertificates: "加载 SSL 证书失败",
+  failedToUpdateCertificate: "更新 SSL 证书失败",
+  failedToDeleteCertificate: "删除 SSL 证书失败",
+  failedToCheckCertificate: "检查 SSL 证书失败",
+  noCertificatesToRefresh: "没有证书可刷新",
+  startingRefreshAll: "开始刷新 {count} 证书",
+  checkingSSLCertificate: "检查 SSL 证书...",
+  deleteConfirmation: "确定要删除 {domain} 的证书吗？",
+  deleteWarning: "此操作无法撤销。这将永久删除证书。",
+  
+  // Misc
+  unknown: "未知",
+  never: "从不",
+  none: "无",
+  loadingChannels: "加载通知渠道...",
+  noChannelsFound: "未找到通知渠道",
+  noSSLCertificates: "未找到 SSL 证书",
+  created: "创建时间",
+  lastUpdated: "最后更新时间",
+  lastNotification: "最后通知时间",
+  collectionId: "集合 ID"
+};