Midnight tide introduction: At midnight, there was a faint "sand" sound on the river. The tide was high, and a black line of black pigment was floating on the misty water. After a while, the sound became louder and louder, and the tide came with a thunderous roar, like a hundred thousand troops approaching the city. A towering tidal peak forms on the river, with waves reaching the sky, as if rushing towards the bright moon in the sky.