Asian are famous for their tea culture. Unlike Myanmar, Tibetan and Vietnam, Japan's tradition of drinking tea has been renowned all over the world. Tea ceremony involves preparing tea powder for guests and enjoying its rigid taste quietly and serenely. Influenced by Zen Buddhism, tea ceremony seeks to purify their mind. The tea serving ceremony used to be exclusively practiced by nobles and priests who gave it its original form around the middle of the fourteenth century. In Japan, its popularity gradually spread to wealthy merchants, warlords during the era of civil warfare (in the 15 and 16 centuries) and their retainers. The tea ceremony has been modified in many ways over the years. Until the end of the Edo period (1603-1868), it was practiced almost entirely by men; women joined in only after the beginning of the Meiji Era (1868-1912). There are many schools of tea ceremony, including the three Senke schools of Ura, Omote, and Mushanokoji. They all maintain the spirit of the ceremony while preserving their own distinctive of tea preparation and serving.   What is the purpose of the text?