Introduction to the Zheng Family House: The Zheng Family House was called the "Mandarin House" during the Macao-Portuguese period. It is located in the left lane of Longtou, Macau, in front of Grandma's Well. It is the former residence of Zheng Guanying, a modern Chinese thinker. It is a Lingnan style house. Zheng Guanying wrote and completed "Warning Statements in the Prosperity" which shocked the government and the public during the late Qing Dynasty and had a profound influence on later generations. Because its architecture combines Chinese and Western characteristics, it is included in the Historic Center of Macau.