《淮南子·地形训》
长江发源于岷山，东流会融汉水而流入大海。途中左拐向北流，到达开母以北，又右拐再向东，直到流向东方之极而入海。
江出岷山，东流绝汉入海，左还北流，至于开母之北，右还东流，至于东极。
The Yangtze River originates from Minshan Mountain, flows east to Han River and flows into the sea. It turns left and flows north on the way, reaches north of Kaimu, turns right and goes east again, until it flows to the east and enters the sea.