In the Qing Dynasty, Bai Xiakeyan said, "Ruan Dacheng's home is in the south of the city (that is, at this small gate), and the world calls it the crotch." Sun Shulei of Nanjing Normal University also quoted the story of Jinling Ecology in his research on the creation of Four Biographies of Stone Nest: "There is Shuizhai Anjie in the east, with the street at the entrance, and there is Kusi Square in the south, where Shi Chao Garden is located in the Ming Dynasty, which is called Kucha". "

Sun Shulei concluded: "According to the street view of the southwest corner of Jinling City in the book, we know that Shi Chao Garden is located in the southwest corner of Nanjing City, not far from Phoenix Terrace, Xinghua Village and Ruan Ji Tomb, and it is a place where foreign giant rooms gather." According to the information of Nanjing Geographical Names Committee, Kusifang is located in Ma Yin Lane, west of the south gate of Nanjing, and its "origin and significance" column clearly records: "1950 merged into Ma Yin Lane, which was named Kusifang in Ming Dynasty, and Ruan Dacheng lived here. Because it is annoying, it is called Kusifang (the homonym of Kusifang). "

There is another story about the origin of "crotch". In other words, there used to be two intersecting hutongs, like the legs of trousers. This place is called Kusifang, so people gradually call it "crotch".

Today's Ma Yin Lane is an alley dominated by gray tones, with well-preserved ancient buildings in Ming and Qing Dynasties. Ma Yin Lane is well preserved, but after several dynasties, there is no trace of Ruan Dacheng's Stone Nest Garden here now.

At that time, Ruan's garden was acquired by Xiaolian in the Qing Dynasty and became a Taoist garden, which was destroyed during the Taiping Heavenly Kingdom. Ruan's descendants left here in the early Qing Dynasty and moved to Jiangning outside the city. Jiang Shiquan of the A Qing Dynasty explained "Crossing the Old Residence of the Ancient philosophers and Chai He";

An acre of wasteland and a half acre of pool, the people in the bureau are still singing Ruan dialect.

In Meng Qilin's Xuan, both the monarch and the minister are excellent, and Mao Yu's article is peacock posture.

With the revival of society, it is difficult to prohibit the resurgence.

The corner of the city points to Wuyi Lane, which only the swallows in the Southern Dynasties know.