According to the personal library, no, Chengdu is not the Tang Dynasty. The correct statement is "Five Tianjin in Datang, five lakes and four seas", in which "Five Lakes" refers to Gui Hu, East Lake, Xijiao Park, Beihu Park and Nanhu Scenic Area; "Four Seas" refers to Qionghai, Jinma River, Zouma River and Jiang 'an River.
The Tang Dynasty (another name for the Tang Dynasty) generally refers to the Tang Dynasty (the historical dynasty of China) (6 18-907), which was a unified dynasty after the Sui Dynasty. It lasted 2 1 emperor and enjoyed the country for 289 years. This is recognized by China as one of the most powerful times.