I can't write Chinese characters in edited posts, but OP could when posting
107138
Overzealous spam filter triggers on Chinese characters in the "Help and Improvement" queue
129368
Display the original, unedited post on the post editing page
4570
TeX Live 2021 CJK bug
16766
Why does editing posts on SO require a minimum of 6 charaters?
149870
URL not handled correctly in Comments
134414
How to deal with invalid, but still community-approved edits?
20114
Why are usernames allowed to be composed entirely of non-visible Unicode characters?
92914
Comments, questions and answers don't trim Unicode U200B when counting characters
49156
What does the "help post localization backfill" automatic deletion reason mean?
68665
Change this behavior to allow for spelling corrections and the like: "Edits must be at least 6 characters"
148754
Where has my `uniq` or `sort -u` line gone, with some unicode characters
59983
What symbols/characters are not allowed in tags?
152647
strange character encoding of stored data , old script is showing them fine new one doesn't
74299
Cannot edit posts on iOS app
158881
Edited answer converted to a comment produces "no edit history found for this comment" message
38493
How do I deal with wrong or irrelevant edits made to my posts?
45612
Printing UTF-8 (including Chinese) text