The Kangxi Emperor's Southern Inspection Tour (IX) / The Kangxi Emperor's Southern Inspection Tour (IX), 1

"South Inspection Tour of Emperor Kangxi" Scroll-picture IX depicts an inspection visit to Shaoxing City, Zhejiang Province.
The scroll is kept in Beijing. The height of the scroll is 67.8 cm and the length is 2227.5 cm.
The scroll begins with a picture of the Qiantang River. The unloading of goods arriving by the river is in progress.
The river was an important transport artery through which the northeastern part of the country communicates with the sea.

The Qiantang River is famous for the world's largest tidal wave. A tidal wave up to 10 meters high travels up the river at a speed of up to 40 km / h.
The power of the tides increases on the first and fifteenth of each lunar month. This is due to the fact that on these days the Sun, Moon and Earth are located on one straight line, and the total force of attraction of the two luminaries enhances the tidal power
The peculiarities of the tide on the Qiantang River are also determined by the geography of this area. At the mouth of the river, the width of the bay reaches 100 km, but narrows rapidly, and in Haining County, near the city of Yanguan, its width is hardly 3 km. Because of the narrowing shores, tidal waves that enter the spacious bay become fast and stormy. They are like a high wall of water that rises up the river, becoming higher and higher.

The waterways and rivers of eastern and southern China have been abandoned, resulting in increased flooding.
Kangxi undertook his travel inspections to see what engineering solutions were needed.
These tasks were necessary to maintain an annual flow of four million dan of rice transported from the south to the north of the country.