hello @Marvin, thanks for posting!! it would be awesome if you could introduce yourself at Welcome to the Community, let's meet!!
we do actually support Simplified Chinese in the platform, you can change it be navigating to your icon (top right) > My Profile. there, you’ll see the option to change the Language to Simplified Chinese:
furthermore, regarding your Apps and storing the data in Tables, you can store information in any language you’d like
is this what you were referring to??
and regarding the adding subtitles to the Tulip University videos, I’ve let @John (who leads Product Education at Tulip) know about this.
thanks again for posting!!