This is a poem about the author's overnight stay at Donglin Temple in Lushan. The first couplet is borrowed from Sima Xiangru's "Zixu Fu": "Eighty-nine people who swallow the cloud dream have it in their chests, and they have no grudges." Yunmeng was originally the name of Guze, and later generally referred to the hunting area of ??the King of Chu in the ancient Chu Kingdom. There is a legend secular story. These two sentences say that when he sees the thousands of peaks in the rivers and lakes, he doesn't mind the mist-shrouded mountains and dreamy legends in Mount Lu. He loves both mountains and rivers. In the couplet, the poet suddenly had a strange idea: summon the moon from Xisai Mountain to listen to the bells of Donglin Temple. Lu You once wrote in "Enter Sichuan" that "the empty river is vast, and the moon is like a purple gold plate, emerging from the water." It can be seen that Xisaishan made a deep impression on him the month before. Xisai Mountain is an ancient battlefield, and the bells of Donglin Temple are the sounds of Buddhism praying for well-being and peace in the world. This image contains profound insights. The neck couplet says that life is uncertain. The poet never expected that he would stay again, and the old monk in the temple did not remember that the poet had ever been there. The last couplet says: It was the summer day in June, and he was sleeping soundly with the windows open. What sound woke the poet up from his sleep? It turned out to be a water bucket in the mountains. The natural flowing water pushed the stone bucket and made a continuous sound. The implications of this are worth slowly understanding.