Filing my U.S. taxes from China?

Hi, I am an American expat living and working in Shanghai since 2024, and my U.S. taxes are starting to get a little complicated. I trade crypto/stocks, have a company in China and Hong Kong, and a few other sources of income. Are there any U.S. tax filing agents in Shanghai / China that people use to file? I assume there are loads of Chinese here with us tax obligations, how do they do it, or who do they use?my U.S. taxes are starting to get a little complicated. I trade crypto/stocks, have a company in China and Hong Kong, and a few other sources of income.