What is the central idea of the Chinese Tea Ceremony? Four words to describe

The Chinese Tea Ceremony is more dependent on traditional Chinese thought, with Confucianism as the core, emphasizing the ideas of "mediocrity" and "harmony", and carrying out the spirit of "propriety, righteousness, benevolence, and virtue". The spirit of "propriety, righteousness, benevolence and virtue" was implemented. Liu Zhenliang, a eunuch at the end of the Tang Dynasty, once put forward the so-called "ten virtues of tea drinking".

Well Yang Zi "tea dispersal depression gas, tea to get rid of sleep gas, tea to raise anger, tea in addition to the sick gas, tea Li Liren, tea to show respect, tea taste, tea to nourish the body, tea can be feasible to the road, tea can be elegant Zhi."