Screen : The screen session creaeted by ssh and local console seems separated

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But if that's the case, I won't be able to achieve the functionality I want.

The actual scenario is as follows: my friend set up a server host and runs a console server program on it. I hope to remotely access his host via ssh at any time and use his server program console (including viewing historical messages and inputting commands), while he can also directly use the console of this program on the server host.

By the way, I found that the situation described in this post (https://stackoverflow.com/questions/67443908/behavior-of-screen-over-ssh-cygwin-screen-detachment) is exactly the same as what I encountered while looking for help.