One of the important river in China is Changjiang river. it located in Shanghai from the west part of China to the east part of China and Shanghai is the entrance to the river. It is about 6300 kilometers. Why I would say the Changjiang river is so important to us. First of all, it provides us a good transportation and the ships could transport goods or cargo from the coast city to the inland cities, so it boosts the city's economy. Secondly, we could use the branches of the river to irrigate the lands and based on that lots of fishing industry is set up in some cities. Thirdly, the fishing industry also depends on the river. We could use the river to produce electricity. Shanghai become the biggest export city and the best economy in China because we are using the river to export our products to the North America and Janpan, it is less distance from Shanghai to these counties so it could be more conventient and efficient than other transportation. Besides, people from other countries would like to invest in Shanghai, so Shanghai become the finical city. Thank you very much