The mountain city is brightly lit at night, which constitutes a wonderful night scene. Known as "Water Lantern" since ancient times, it became one of the "Twelve Scenes of Bayu" during the reign of Qing Qianlong (1736- 1795). This is because the Yangtze River and Jialing River meander here, which looks like the word "ba" in ancient seal script, so it is called "water of words".
In the early Ming Dynasty, Dai Ding expanded the old city of Chongqing. In order to conform to the geomantic omen, he built 17 gates according to the number of nine palaces and eight diagrams to show the meaning of "Jintang City". Of these 17 gates, Lifu brought water into the city from two rivers. Later, there were frequent fires in the city. The government thought that the floodgates could not control Mars, so it closed all eight gates, leaving the saying "Open 9 gates, close 8 gates, and open 98 17 gates".
Chaotianmen is the largest gate, and there are four characters on the gate: "Xiongguan in Ancient Chongqing". Because this gate runs along the Yangtze River eastward and faces Nanjing, the capital of the Ming Dynasty emperor at that time, local officials greeted the imperial envoys here and received the imperial edict, hence the name "Chaotianmen". Chaotianmen is located at the intersection of Yangtze River and Jialing River in the northeast of Chongqing, facing each other and separated on three sides. The terrain is medium and high, and the two sides gradually incline downward. On the left, Jialing River receives a trickle, joins Xiaochuan River, and joins the Yangtze River here. Every early summer and mid-autumn, the green Jialing River water collides with the brown Yangtze River water, and the vortex rolls, clear and turbid, which is very spectacular. On the right is the Yangtze River. After being submerged by Jialing River, its momentum is getting bigger and bigger. It flows through the Three Gorges and Jianghan, spilling thousands of miles and becoming the "golden water section" on the Yangtze River.