【正确答案】 In Qin and Han Dynasty, Jinjiang River was called Chengdu River, which included Pijiang River (inner river) and Jianjiang River (outer river). Since Han Dynasty, the two rivers have got a poetic name: Jinjiang. According to historical records, women weavers in Sichuan preferred to wash brocade in these two rivers as the brocade would be bright in texture and color after being washed in these rivers, from which Jinjiang got its name. Also the name of Jinjiang is related to Dujiangyan Irrigation System. In ancient Shu, the water flow of Minjiang River in the drainage basin of Chengdu Plain was desultory and muddy that the plain became a swamp, which was not suitable for farming. However, thanks to Dujiangyan Irrigation System, two rivers were used for irrigation, turbidity current turned into limpid river, water disaster disappeared and the river began to benefit the surroundings. With these favorable conditions, Jinjiang then could gain the opportunity to win itself a name. Dujiangyan has made Chengdu Plain a vast land of abundance, and Jinjiang has made Chengdu a famous capital of prosperity and richness. Both Dujiangyan and Jinjiang are the cradles of Chengdu as a civilization city. Jinjiang River gives Chengdu green and beautiful natural environment and the born beauty of Chengdu will not exist without the superior natural conditions of Jinjiang River featuring clean water, clear sky, warm climate and wonderful scenery.