Tea: What about the lid of the teapot when you want to pour water? Then through what actions to express gratitude? (tapping your finger? )

In a teahouse or hotel in Guangzhou, when you don't want the waiter to pour water for your teapot, you can turn the lid of the teapot over or tilt it slightly, and the waiter will come and pour water for you when he sees it.

When friends and relatives go to have tea for dinner, they usually add tea to each other's cups. The recipient will tap a few times with his finger to show his gratitude. This kind of beating is irregular, usually two or three times.