Joke Collection Website - Talk about mood - QQ space says it cannot be modified after a period of time?

QQ space says it cannot be modified after a period of time?

Hello, as for the modification, as long as you don't sign in, everything else can be modified. See the figure for details:

This is a conversation in April. Click more, and there is an editor to modify this speech.

Comments forwarded in April can also be modified.

But the logged-in person has no editing options.