Excuse me, where is a hotel in Futian District, Shenzhen that can accommodate about 300 people for an annual gathering (30 tables)?

That's too much. For example, some hall units or club units. 800 people can handle it. Our company made it at the Silver Lake Resort Center. I also worked in a conference center next to Donghu Hospital. There are almost 500 people in our unit. Ha ha. I hope it works for you. As for Yinhu Holiday Center and Donghu Holiday Center, you can search the phone number on Baidu website and personally recommend Yinhe Holiday Center. The environment is good, surrounded by villa units, and the price is ok.