Yao Yuying, the teacher of Tianda University, edited it, and it was published by Tianda Publishing House. It was originally learned by their undergraduates. Chai, editor-in-chief, Chemical Industry Press. In fact, it's almost less than the Chen Minheng version. It's easy to get high marks in the initial test of materialization, and it's good to take the original test 130. This year, our major is 146 for the first time. Materialization is a blue book compiled by teacher Tian Da.