diff --git a/src/i18n/messages/zh_CN.json b/src/i18n/messages/zh_CN.json
index 10a478e5..d3d04283 100644
--- a/src/i18n/messages/zh_CN.json
+++ b/src/i18n/messages/zh_CN.json
@@ -1,14 +1,14 @@
 {
-  "learning.accessExpiration.deadline": "Upgrade by {date} to get unlimited access to the course as long as it exists on the site.",
-  "learning.accessExpiration.header": "Audit Access Expires {date}",
-  "learning.accessExpiration.body": "You lose all access to this course, including your progress, on {date}.",
-  "instructorToolbar.pageBanner.courseHasExpired": "This learner no longer has access to this course. Their access expired on {date}.",
+  "learning.accessExpiration.deadline": "通过 {date} 升级即可无限制地访问该课程，只要它存在于网站上。",
+  "learning.accessExpiration.header": "旁听课程访问过期 {date}",
+  "learning.accessExpiration.body": "您将在 {date} 失去对这门课程的所有访问权限，包括您的进度。",
+  "instructorToolbar.pageBanner.courseHasExpired": "此学员不再有权访问此课程。他们的访问权限已于 {date} 到期。",
   "learning.accessExpiration.upgradeNow": "马上升级",
-  "learning.activeEnterprise.alert": " {changeActiveEnterprise}.",
-  "learning.activeEnterprise.change.alert": "change enterprise now",
-  "learning.outline.alert.start.short": "Course starts {timeRemaining} at {courseStartTime}.",
-  "learning.outline.alert.end.long": "This course is ending {timeRemaining} on {courseEndDate}.",
-  "learning.outline.alert.end.calendar": "Don’t forget to add a calendar reminder!",
+  "learning.activeEnterprise.alert": "{changeActiveEnterprise}。",
+  "learning.activeEnterprise.change.alert": "现在换单位",
+  "learning.outline.alert.start.short": "课程从 {timeRemaining} 开始于 {courseStartTime}。",
+  "learning.outline.alert.end.long": "本课程将于 {courseEndDate} 在 {timeRemaining} 结束。",
+  "learning.outline.alert.end.calendar": "不要忘记添加日历提醒！",
   "instructorToolbar.pageBanner.courseHasNotStarted": "This learner does not yet have access to this course. The course starts on {date}.",
   "learning.enrollment.alert": "您必须报读此课程才能查看课程内容。",
   "learning.staff.enrollment.alert": "You are viewing this course as staff, and are not enrolled.",