This tutorial is set by the author to use the CC by-NC protocol.

Hello everyne!Today we are mainly talking about wrong feedback.

Do you often encounter such a prompt and don't know what it means:

But if you look like this:

Actually, it is because these two nodes are close, and he means "unable to connect, at least two nodes distance."

Correct demonstration:

Error demonstration:

So there are few tutorials in this issue, so here is here!See you next time, meow ~~~