Glad to hear from you again. As you mentioned in your email, There are indeed some table manners in China. For example,we are not supposed to start eating first if there are older people at the table. And it's impolite to point at anyone with chopsticks. As for places of interest, I suggest you go to the Hangzhou National Tea Museum,where you could watch tea art performances and drink tea.
I'm looking forward to seeing you!