Update README_CN.md

[Nicole00]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Description:

How do you solve it?

Special notes for your reviewer, ex. impact of this fix, design document, etc:

[codecov-commenter]

Codecov Report

Base: 44.67% // Head: 44.67% // No change to project coverage 👍

Coverage data is based on head (2e2ae60) compared to base (b5a013f).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #81   +/-   ##
=========================================
  Coverage     44.67%   44.67%           
  Complexity      123      123           
=========================================
  Files            30       30           
  Lines          1672     1672           
  Branches        280      280           
=========================================
  Hits            747      747           
  Misses          846      846           
  Partials         79       79           

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