Playing in Zhejiang in the rain, the ancient weir that lasted for thousands of years painted the wonders of rural water conservancy, and the ancient weir that survived the flood test.

If you visit Zhejiang, there is a new word that is often mentioned, "Zheli". The so-called "Zheli" refers to the inland areas of Zhejiang that are not near the sea, mostly Lishui, Jinhua and Quzhou, as well as the remote mountainous areas and hills adjacent to these areas. The inland areas of Zhejiang have preserved the most simple humanities and environment in Zhejiang, and also left many ancient towns and villages with little changes. In history, "Zheli" was once the best place to avoid war, epidemic and seclusion.

Entering "Zheli" is like entering a scenic and cultural treasure area. Because of the traffic conditions in mountainous areas, the development of "Zheli" is slower than that in coastal areas. The elite villages and towns in "Zheli" are distributed along the ancient road in the historical mountain. Entering "Zheli" is like plunging into a time machine. When you go deep into the mountains along the road, you think that time is going backwards. The deeper you go, the longer you feel that time is going backwards. When you come to some places where roads are forgotten, you will feel that time seems to be frozen here.

In the deep mountains of Lishui, Zhejiang, there is a place called "Ancient Weir Painting Township", which has been developed into an ancient town scenic spot. In fact, "Guyan" and "Huaxiang" are the names of two opposite villages on both sides of the river. Guyan and Huaxiang belong to two villages and towns on both sides of the Oujiang River. The villages and towns are separated by a big river, and the ferry is the most convenient means of transportation. Because it is the intersection of many rivers, there are frequent floods. The World Heritage "Tongji Weir" water conservancy project is located here, and the local area is proud of the ancient water conservancy project.

It was rainy when I came to the ancient town. I visited the ancient streets and ancient buildings in Huaxiang in the rain. There are many huge ancient and famous trees here. The rustic atmosphere of the countryside and ancient streets here is rich, which is very suitable for taking portraits. The photos taken are very emotional, and it is said that it is the place of photography in online celebrity.

After a while, the rain stopped, and the surrounding area became foggy, which made people feel like a fairyland. People felt that they had come to the right place by car on weekends. It was really self-cultivation, clean air and slow life. It is located in a mountain valley with abundant vegetation, and the river bend is often shrouded in mist. Most mornings, you can see the mist on the river, which gives you a feeling of misty rain in Fuchun Shan Jutu.

The ancient town of "Ancient Weir Painting Township" is a scenic spot. There are no tickets in the scenic spot in the morning and at night, and you can enter and leave freely. However, you need to buy a ticket to see the ancient weir across the river by boat. The tickets here include the entrance and exit tickets for the nearby ancient weir and Huaxiang, as well as the round-trip ferry tickets, or the tickets for the ancient town which are quite cost-effective. When you come to the other side by ferry, the main thing you want to see is the World Heritage Tongji Weir. Everyone who comes here will have a look at this ancient water conservancy wonder.

when crossing the river by boat, the boat will cross a section of waterway full of reeds. After landing, there is a special Tongji Weir Museum on the other side. There will be a sand table to show the nearby terrain. After seeing the sand table and the map, you will know why a water conservancy project will be built in this place. The text and pictures in the museum are clearly explained, and there are special multimedia films and animations, which make it easy for people to understand the greatness of Tongji Weir Water Conservancy Project.

Tongji Weir, the great water conservancy project, is the originator of the arch dam in China. It was built in Xiaoliang Tianjian in the Southern Dynasties for four years (more than 1,5 years ago), and it is the oldest large-scale water conservancy project in Zhejiang Province. Its construction skills have been listed in the fourth batch of representative projects of intangible cultural heritage in Zhejiang Province, and it has been successfully selected as the "First World Irrigation Project Heritage", which belongs to the world heritage.

Like Dujiangyan, the ancient weir of "Tongji Weir" is still playing the role of water conservancy regulation and storage today, which has benefited the local area for 1,5 years, ensured the favorable weather of Bihu Basin, the largest granary in southwest Zhejiang, and turned it from the former wild land into a paradise for drought and flood protection. Tongji Weir's construction technology is very special. A series of scientific principles and advanced technologies were applied thousands of years ago, and the form of arch dam was pioneered. The building material of the ancient weir was originally a wooden gravel dam, but it was changed to a "stone dam" in 125 (Southern Song Dynasty), and the whole dam body of the ancient weir has always maintained the characteristics of ancient arch structure.

The original topography of the local estuary is very prone to floods. The construction of this ancient weir has made the local fertile landscape thousands of miles away. The story of the development and construction of the World Heritage Tongji Weir, as well as its functional features, can be seen in this exhibition hall. The exhibition hall is the only way to visit, and visitors will not miss it.

On both sides of the main canal in Tongji Weir, there are ancient camphor trees with a tree age of hundreds or even thousands of years. The camphor trees are arranged in rows with spectacular scenery. You can visit along the ancient street, and you can also see ancient buildings such as the ancient temple dedicated to water dragons.

The water diversion channel project here adopts stone culvert, and the stone culvert is cleverly constructed. The stone culvert water diversion bridge was built on the Tongji Weir channel, which is equivalent to the ancient "elevated road" water conservancy channel. This three-dimensional channel water diversion technique not only avoids the water in the spring pit, but also makes the canal water unimpeded. Only after seeing it with your own eyes will you sincerely admire this ancient water conservancy building, which still plays a role today.

There are many ancient water conservancy facilities in the ancient town. There are special place name signs and explanations in the scenic spot. There are also special explanation volunteers who will explain the strange and ingenious places here, such as the story of rows of ancient trees, the story of the old pawnshop and the story of the water overpass with flowing channels. This scenic spot is a very good place in the operation of the ancient town in Zhejiang.

Longquan kiln near Lishui, in the ancient street of Guyan Painting Township, saw many shops selling celadon items. The price of celadon was relatively low, which may be due to the overcapacity of local porcelain. If you drive here by car, you can choose some to go back. These are local tourist souvenirs with high cost performance.

Follow the trails and signs, and you will see the Tongji Weir when you come to the river. The Tongji Weir is a comprehensive water conservancy facility, and its dam is arched, but now it is more like an S-shape, which can resist the impact of floods and divide water between rivers and irrigation channels according to the amount of water.

because of the recent heavy rain, the water level is very high, and the flood overflows the top of the ancient weir. It can be seen that in the flood state, a large amount of water is poured into the lower reaches of the river, but the side still maintains the normal water flow in the irrigation channel for farmland, so the ancient weir has two adaptability: normal working state and flood working state. In the flood, fishermen still stood on the ancient weir and cast nets to fish. It seems that there is still their own fishing function here.

Tongji Weir, a great water conservancy project, has well protected the safety of nearby farmland, bred the richness of nearby valley basins, laid the economic prosperity of surrounding ancient towns, and made the surrounding people stay in the deep mountains for thousands of years. In the local ancient towns, you can find the profound accumulation of history and culture here, and the ancient weir painting town is a good place to convey the ecological and humanistic Lishui to the contemporary world.