Learning Chinese is not easy. That being said, one does not need to know Chinese in order to work with peers or business partners from China. For working in China, while knowing the local language is certainly an advantage, it is not a requirement, especially in science and technology. I have met a few scientists and exchange scholars in China. They basically only know how to say "Good morning," "Thank you," or "Sorry, I don't know how to say it in Chinese." One can expect co-workers to speak English. Buses and subways in big cities announce stops in English. There is English on road signs. Restaurant menus may not have English, but they likely have photos, or perhaps you can just surprise yourself anyway.

There is a new K visa that is granted to anyone holds a STEM degree from a well-established college anywhere in the world. People can come to China first and then look for a job. This K visa is less than a month old, so it is unclear how it works. Getting a job is a different story. Past data shows that non-state-owned small businesses created more than 90% of new jobs. Perhaps because they have not fully recovered, the job market is tight.