At the junction of Shengzhou Road and Zhongshan South Road in Nanjing, in the busy city, there is a small alley with white walls, grey tiles and a string of red lanterns, which marks the Nineteenth South Catching Hall, Ganjia Grand Courtyard. This is the famous "ninety-nine and a half" - the largest civilian residence in China in the Qing Dynasty. Ganxi residence has a history of more than 200 years. The Gan family in Jinling is a prominent family in the south of the Yangtze River. Ganjia courtyard has made three major contributions from ancient times to today. One is the ninety-nine semi-large-scale private residences in the Qing Dynasty, the other is whether there are a large number of precious ancient books in Tianjin and the third is a fruitful contribution to the promotion of Jingkun Work. There are few people here. They can taste operas carefully, Nanjing folk customs and Chinese cultural heritage. There are also many intangible cultural heritage exhibitions, which are very worth seeing.