How to do chi2 test with only original data and simulation one on stata?

I am asking you for how to do chi2 test only based on two datasets (the original data and the dataset simulated from the reference model) on Stata.

I know you have your expertise on doing any kind of data analysis, but this is what I want! If you can tell me how to do such test from K-S method. That would be really appreciated!!!

Good night and wait for any idea for that asap!!!