Glad to hear from you and you’re welcome to China in July. The following are some Chinese customs.
Firstly, we greet each other by saying “Hello” or asking such questions as “Where are you going?” or “Are you busy?” to express our care. Secondly, when praised, we reply with “Oh, no!” or “I’m over-praised” to show good manners. Next, when receiving a gift, we usually say “It’s unnecessary” besides “Thanks” to show politeness and then put it away. Finally, at dinner parties, we talk loudly and touch glasses when drinking to someone’s health or success to show that we’re warm.
Anyhow, different cultures, different customs. If you “Do as the Romans do when in Rome”, you’ll enjoy more of your stay here.
I hope what’s mentioned above might be helpful and wish you a good journey.