I did not see any problem for you to get F vsia in third country. But I know some special country, such as some Africa counties need to go back to home country to get F visa.
However, for your situation, your problem is difficulty to prove that you have enough finance support because of your hu*****and returing China. So, if your case is denied, you can not go back to America
However, for your situation, your problem is difficulty to prove that you have enough finance support because of your hu*****and returing China. So, if your case is denied, you can not go back to America