《徐霞客游记·游黄山日记》
继续走十里路，就见两座山十分陡峭，像两扇逼近的石门，溪水流到这里就被它所约束。
十里，两山峭逼如门，溪为之束。
Continuing for ten miles, we saw two mountains that are extremely steep, which served as two pressing stone gates, and the creek was constrained by them.