根据以下要点提示写一篇题为 Chinese tea 的短文，向外国朋友介绍中国的'茶文化。
It is 4,000 years since the Chinese began to grow and drink tea.
There’re many kinds of tea in China, of which Longjing Tea is famous all overthe world. Tea is usually drunk in tea sets. A tea set is made up of a tea pot and someteacups, which are both made of china.
Most Chinese are fond of drinking tea. Tea is served not only at tea house and restaurants but also at home. People also drink tea during breaks at offices or factories. It has been discovered that drinking tea does a lot of good to people’s health.
A cup oftea can make you relaxed and refreshed. And it’s said that green tea can prevent cancers. That’s why tea is becoming more and more popular with people.