How to verify Chinese legitness

Great title I know. Looking for tips on how to make sure Chinese shoe listings are legitimate. I want to start experimenting with brands like Li-Ning and Anta but it can be difficult to buy their shoes in the US.

For example here's a listing I found on SHEIN for the Li-Ning Challenger 5,

http://api-shein.shein.com/h5/sharejump/appjump?link=lJ6IufTtay6_8&localcountry=US&url_from=GM73854616798

It says below 100% authentic guaranteed, but the seller only has two followers, and the description says "legit official store" which is sus

This model is actually on Amazon for $100 in some colorways but here it's still a lot cheaper at $69