In the rich text editor:
@KanadeMori
In a comment:
[KanadeMori](https://chowlings.com/user/KanadeMori)
For Names and Avatars:
In the rich text editor:
%KanadeMori
In a comment:
[![KanadeMori's Avatar](https://chowlings.com/images/avatars/488.jpg?v=1644063299)](https://chowlings.com/user/KanadeMori) [KanadeMori](https://chowlings.com/user/KanadeMori)