How about the book Heng Zhong Xue Case?

The case of Heng Middle School is a very good book. The case of Hengzhong Middle School was compiled by the general review writing group of the second round of college entrance examination. Due to the differences in geographical and academic conditions, the selected exercises are more difficult, with a solid foundation and improved examination ability. The book "The Case of Hengzhong Middle School" is provided by Hebei Wanjuan Culture Co., Ltd., and is exclusively authorized by Subject Network to publish teaching materials online.