This is a legendary story called "Sherlock Holmes in the East" by modern people. Di, a native of Di Village, Taiyuan, Shanxi Province, was a famous figure who assisted Wu Zetian's political reform in the Tang Dynasty. He is honest and upright, observes people's feelings, helps others, and solves cases like a god. During his tenure at Dali Temple in Taiyuan, he solved countless mysteries and became famous all over the world. The first part of Di's Legend of Solving Crimes consists of six bizarre and fascinating stories: the nail house case, the Hongguan case, the Han Jiaying case, the Imperial Pearl case, the Ziguang Temple case and the Chaoyunguan case. It shows the rich and colorful social life in the prosperous Tang Dynasty, and depicts the wisdom and historical achievements of Di Renjie, a famous Tang Dynasty scholar who was one thousand years earlier than the western Sherlock Holmes.