Take advantage of the four-hour opportunity to change planes in Nanjing, from the airport to Metro Line 3 by Subway S1, get off at Wudingmen Station for 7 yuan 40 minutes, and then get off a few hundred meters. Lao Mendong has a long history. Lao Mendong is located in the east of Zhonghua Gate (formerly called Jubao Gate) in Qinhuai District of Nanjing City. It is called "Mendong" because it is located in the east of Nanmen of Nanjing Capital City, which is opposite to the west of Lao Men. Lao Men East Block is a well-known open national 5A tourist attraction in China. It is a part of the Qinhuai Scenic Belt of Nanjing Confucius Temple. Mendong is the gathering place of traditional dwellings in Nanjing. Since ancient times, it has been the place where businessmen and businessmen from south of the Yangtze River gathered together, where people gathered and families lived. Mendong is a broad concept, east of Zhonghua Gate is Mendong. Today, the historical and cultural block of Lao Mendong is a narrow concept of Mendong. As early as the Three Kingdoms period, there were residential settlements in Mendong. In the Ming Dynasty, along the Zhonghua Gate and Qinhuai River, it became the economic center of the city. It became an important distribution center of trade and handicraft industry, showing a flourishing scene. After the end of the Qing Dynasty, Mendong, Menxi and other areas in the south of the old city gradually became areas with residential functions as the main part, which embodied the style and features of traditional houses in the south of the old city of Nanjing. Because it was daytime and there were not many tourists, I turned around to take pictures, had a snack lunch here, and then returned to the airport along the original road and left Nanjing by air. It's easy to master the time of taking the subway. It's a good way. Next time you have a chance to come to Nanjing, the next stop is the Confucius Temple. It's also a famous tourist attraction in Nanjing.