It's evident that we can know many thing about the land with the world when we follow rivers.In this documentary，the six river as women as warm.so it let people can't help helping the river.but we still not can't have people throwing rubbish.Always help the river.what a beautiful rivers!I do not know whether the pollution and heavy industry have a relationship.But it is high time that help the rivers!That is no doubt that river nurturing civilization.hardly we help when it became diffrient.I can see nothing but a beautiful future.

Would you please help the river?