My mother applied for political asylum in the United States, and also applied for me and my father. A year later, my father and I got a green card. Can we go back to China? Is there any risk?

If you return to China during the green card period, the Immigration Bureau will think that your family's application for asylum is fraudulent.

Resulting in the cancellation of green cards and deportation.

When you are naturalized in the United States, you need to apply for a Chinese visa. The Consulate of China knows that you came to the United States through asylum.

You may be refused a visa.

Basically, it is unlikely that you can return to China.