American immigrants with outstanding talents were rejected. There is a company called Hangcheng International, and my friend said it could solve my problem.

If rejected, you can reapply. As far as I know, the company you mentioned is not bad, just next to Shanghai. Because I don't know the specific reasons for your rejection, I suggest you go offline for consultation, so that you can have a clearer understanding and it will be very helpful for you to apply again. As long as your information is true, the re-application rate is quite high, so don't worry too much.