Around the Tang Dynasty, with the spread of Buddhism, China tea entered the Korean Peninsula and the Japanese archipelago. It was Japanese monks who first introduced tea to Japan. In A.D. 1 168, Zen Master Rong, a Japanese monk, went through hardships and dangers to study Buddhism in China, and at the same time studied tea studies assiduously. After Rong returned to China, he brought a large number of China tea seeds and Buddhist scriptures back to Japan, vigorously promoted the ritual of "offering tea" in Buddhism, and planted China tea seeds for drinking. Rong Xi used tea to cure the diabetes of the then Kamakura shogunate, and wrote "Drinking Tea for Health" to publicize the magical effect of drinking tea. In the book, tea is called "a godsend" and "a wonderful way to preserve health and prolong life". Rongxi is known as the "tea ancestor" of Japan. In the15th century, Japan's tea drinking fashion was promoted by Masajiro Morino, a famous Japanese Zen master named Takayuki Murata, who was praised as a genius of tea ceremony, and developed into the Japanese tea ceremony spirit with the purpose of "harmony, respect, purity and silence" today ("harmony" is put into action; "Respect" is quality; "Qing" lived in it; "Silence" to foster ambition). The spiritual essence of Japanese tea ceremony is to pursue equal love between people and a high degree of harmony between man and nature, and to abide by quietness, elegance and etiquette in life, which is regarded by Japanese people as an effective way to cultivate self-cultivation, learn etiquette and conduct interpersonal communication. Japanese tea ceremony is permeated with the fragrance of Yamato national wisdom and the brilliance of Chinese civilization.