The owner of the Dian Xi Lin Yun brand classified the tea material used as follows:
Xiao shu: 10 – 30 years old
Zhong Shu: 30-80 years old
Da shu: more than 80 + years old.
All of the Puer teas in this brand are hun cai, mixed, meaning that the teas are blended with tea trees of different ages, except for the 2014 Huang Jin Ye Raw which only has Dashu tea material. However, none of these teas has tea plantation material.