here are the instructions: https://vosmug2.wordpress.com/custom-txt-file-instructions-for-lunar-crisis/
Did you add a font with chinese characters? maybe that's the part you're missing.
Viewing post in How do I create a custom Chinese TXT? Can anyone teach me?
There's not much I can tell you other than what the instructions say.
Basically, download a font that works for you https://fonts.google.com/?query=chinese rename it to Font2 and place it into the folder with the txt files.