Tunxi Cheng's three houses were the residence of the right-hand man Cheng Minzheng family of the courtesy department during the Chenghua period of the Ming Dynasty, and were known as "the treasure of the Ming Dynasty houses." Cheng Minzheng (January 7, 1446 July 11, 1499), Ming Dynasty officials, scholars, formerly the right-hand man of the courtesy department, the courtesy department Shangshu, author of "Qingzhou Collection", Xiuning Zhi and other works. The unique Ming Dynasty architectural style of the three houses, elegant, beautiful and solemn engravings, has attracted general attention in the domestic and foreign architectural circles.