Introduction to Liu Lei's Tomb: On the east bank of Zhaoping Lake is the solemn tomb of Liu Lei, the ancestor of the Liu surname. The ancestor Liu Lei was a descendant of Yao, the leader of the Tao Tang clan of the ancient tribe, and lived during the Kongjia period of the Xia Dynasty. According to records such as "Zuo Zhuan" and "Historical Records", Liu Lei had a "Liu Lei" pattern on his hand when he was born, which was considered auspicious and hence his name. When he was young, he learned how to raise dragons from the "Huanlong clan". Later, after the summer, Kong Jia got two dragons and asked Liu Lei to raise them. Liu Lei raised them well, so he was named "Yulong clan". Later, a female dragon died of illness. Liu Lei was afraid that Kong Jia would be punished and fled to Qiugong City in Lushan area, where he changed his name anonymously. Therefore, he raised a dragon in the place where the surname "Qiu" lived, so he changed his surname to "Qiu", and later generations called him "Qiu Gong". The city where Liu Lei lived in seclusion was called "Qiu Gong City", and Qiu Gong was Liu Lei. His descendants took "Liu" as their surname, which was the earliest in China. The Chinese surname Liu originated from here, and the Liu family multiplied from here.