At the gates of Nanjing in the Ming Dynasty, earlier generations of Nanjing people could count "thirteen inside and eighteen outside" for you with their fingers.

"Li 13" refers to the gate of the capital and "Outer 18" refers to the gate of the city.

Let's talk about the "outer 18" city gate. After years of changes, some of them no longer exist and are famous.

And "Li Shisan" survived more, and Li Shisan (referring to 13 city gate) was:

East of the city-Chaoyangmen (now Zhongshan Gate);

South of the city-Zhengyangmen (now Guanghua Gate), Tongji Gate and Jubaomen (now Zhonghua Gate);

West of the city-Sanshanmen (now Shuiximen), Shichengmen (now Hanximen, slightly south of Hanzhongmen), Qingliangmen (also known as Qingjiangmen), Dinghuai Gate and Yifeng Gate (now Zhong Xing Gate);

North of the city-Zhongfumen, Jinchuan Gate, Toilet Gate (now Heping Gate) and Taiping Gate.