Business Travel to China

Hi. I work for a Chinese company. But I am a U.K. resident and live in the U.K. I usually visit Shanghai 4 or 5 times as year for 2 weeks at a time. It is possible to travel to China for business. If so, what do I need. I’ve had a covid injection (Astra Zeneca) and can get a negative test result. What else do I need. Is it possible to travel and what would happen on arrival. Would I need to isolate and if so where?