Lei Qiqing and Lei Yanfang are father and daughter. Relevant information shows that Lei Yanfang is the chairman of Tiancheng Education Group, the first company in Liangshan County to register and publish supplementary books. She said that in 2005, with the gradual liberalization of the state's private book industry policy, her father Lei Qiqing went to many colleges and universities to find excellent editors and develop the teaching auxiliary market, but at that time, in addition to editing books, printing was also one of the company's main businesses.