Puerh History - Pu-erh.Net

„In 1940, the Chinese State owned company CNNP started to manufacture Pu Erh Tea with a trademark "Zhong-Cha" at the Fo-Hai Tea Factory (now called "Meng-Hai Tea Factory"). Later, Yun-Nan Tea Company and Guang-Dong Tea Company also produced the same brand and started to export abroad. There were varieties such as red-label, green-label, yellow-label, small-letter and big-letter etc.“

„cha yi; 茶仪 - Tea ceremony. Not generally used to refer to the daily habit of tea making and drinking. Most habitual tea drinkers would be unlikely to use this term in reference to their tea-making activities. Not common parlance in Yunnan tea making circles“