In spring, weak upwelling exists in the river mouth, whereas in summer downwelling occurs in steep area north and south of the mouth.
春季在长江口近岸存在弱上升流，夏季长江口外的陡坡区出现下降流，而长江口以北和以南的陡坡区出现上升流。
There are poems in the Song Dynasty's Wang says: "A spring breeze and the south bank of the Green River. " Talking about how good!
宋朝的王安石有诗云：“春风又绿江南岸。”说的多么好啊！
In the regions south of the Yangtze River, people sweep tombs and enjoy the family reunion with a "Clear-and-Bright dinner", just in the same way as what they do the Spring Festival.
在江南水乡，还有清明祭祖，阖家团聚，吃‘清明夜饭“的习俗，那就有些像过年了。
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