The dujiang is the only huge water project in the world today that has long existed and is characterized by water without dams. It is not only a great miracle in china's water engineering technology, but also a pearl in the world's water engineering. It takes full advantage of the geographical conditions of the high north-west and low south-east of the country, according to the special terrain, water veins, water position, snobs, dam-free and self-flowing irrigation at the estuary of the river, interdependency of the embankments, drainage, drainage and control of currents, and ensures that the combined effects of flood prevention, irrigation, water transport and social use are fully realized. Its greatest feat is that its construction has lasted for more than 2250 years, and that it is increasingly effective. The creation of tujiang, premised on the non-destruction of natural resources and the full use of natural resources for the benefit of humanity, which has brought people, land and water together at a high level, is the world's only remaining ecological project, ushering in a new era in china's ancient water history, marking a new phase in china's water history, with a shining chapter written on the world's water history. The dujiang water project is the birthplace of the wisdom of the ancient chinese people and a masterpiece of the era of chinese culture。
