Chinese are the first people to have tea. One thousand and two hundred years ago, Yu wrote a book called "The Classic of Tea", is honored as "The Bible Tea". The book gives a detailed (explain) of the origin, the processing skills and the classification of tea.
However, Chinese tea culture goes far beyond tea(it). Take green tea for example, the ideal temperature of water should be around 80 degrees Celsius. If the water is too hot, nutrients(营养物质)in the tea(destroy). On the other hand,if the water is not hot enough, the tea(leaf)won't open up and you will miss the pleasantly fresh flavor. So Chinese people are used drinking hot tea. When you visit a Chinese friend, your friend will (constant) add hot water to your emptying cup. It is polite (offer) the tea cup to guests with both hands. Of course, the guests should pay respect as well, (take) over the cup with both hands.
Talking about adding water to the tea cup, there issaying: Wine full, full cup. Tea half, half cup. For wine, the full cup symbolizes whole heartiness. For tea, the half cup means modesty.