The old gate of Nanjing extends eastward.

From Jianzi Lane in the north to Bianying in the south, Zhuanlong Lane in the east and Tang Shuang Garden in the west. According to the "Nanjing Historical and Cultural City Protection Plan" (20 10-2020), the eastward expansion of Nanjing Laomen is located in the southeast corner of the historic city south of the city, on the east side of Laomen East Area, with a land area of about 20,600 square meters from Jianzi Lane in the north to Bianying in the south, Zhuanlong Lane in the east and Tang Shuang Garden in the west.