You have to get your own legal status like H1b, O1, L1 or J1 (no recommened since there is 2 years obligation), even another F1 after your current F1 OPT, otherwise you have to leave.
Also in China, it will be inpossible for you to get non-immigration visa except H1b because you have immigration tendency.
You spouse can sponser your GC but cann't sponser your staying in US. Even GC sponsered GC based on marriage will take at least 5 years or until your spouse becomes citizen.