Haoji teas were produced by private tea houses from the late Qing dynasty to the 1950s. Very few examples from houses such as Songpin, Tongqing and Tongchang survive, making them the pinnacle of Pu-erh collecting.
Yinji teas were made by state factories in the 1950s and 1960s with "Zhongcha" wrappers. Red, Blue and Yellow Mark teas each have distinct characters. Haoji and Yinji teas remain the focus of collectors at every Hongnan sale.
