In addition to the matcha tea ceremony, the sencha tea ceremony is another popular Japanese tea ceremony. In the matcha tea ceremony, tea leaves milled into powder are dissolved in hot water before drinking. In contrast, the sencha tea ceremony uses leaf tea instead of powdered tea. The sencha tea ceremony was introduced to Japan, during Nagasaki's Toojin trade with China in the Edo period. The ceremony was established by absorbing the fashionable tea culture of China during the Ming and Qing dynasties. There were about ten tea books written about sencha tea following the Edo period in Japan, which quoted several passages from Chinese tea books published during the Ming-Qing dynasties. The authors of these tea books agreed with some parts of the quotes, but refuted other parts according to their own experience or knowledge. These quotes provide several clues to the special characteristics of the Japanese sencha tea ceremony, which were studied by investigating the differences between the tea books of the Ming-Qing dynasties and Japanese sencha tea books.