Does the original carb on the bike show "Youall" brand?
It's a good carb, and many people here have rejet this for better performance (or just to work).
I will wait for an answer. Issue is that ANY carb will need rejetting and tuning. The original has an established base point that can be useful to get it running acceptably. Check here:
https://www.chinariders.net/showthread.php?t=32177