How to check travelers' short messages in time and space?

The short message of the spacewalker is entered manually, and can be viewed in the short message of the expression pack.

Supplementary content:

A time traveler can ask him what he is doing or tell him what he misses. You can talk to him about communication [New Year greetings], or simply ask him for a [red envelope]! If the content contained in the text and the selected expression meet the requirements, the corresponding short message can be triggered.