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In the autumn of the tenth year of Xining, Pengcheng was flooded, and the water in Zhangjun Caotang in Yunlong Mountain was less than half of his home. The next spring, the flood receded and (Yunlong Mountain people) moved to the east of their former residence. At the foot of Dongshan Mountain, I climbed high and saw a strange situation. So he built a pavilion on the mountain. Pengcheng Mountain, the mountains are closed on all sides, vaguely like a big circle; It's just that there are gaps in all directions, and the pavilion of Yunlong Mountain people is just facing that gap. When spring and summer alternate, the vegetation is lush and seems to be close to the sky; Snow and bright moon in autumn and winter are thousands of miles apart. Rain or shine, it changes rapidly. The mountain man has two cranes, very docile and good at flying. In the morning, let them fly to the gap in the western hills, where they fly, sometimes standing in low-lying ponds, and sometimes flying outside the sea of clouds in Wan Li; In the evening, I flew back around Dongshan, so I named this pavilion "He Fangting". Su Shi, the county magistrate, took the guests to visit the mountain people and drank and had fun in this pavilion. Pour wine for the mountain man and tell him, "Do you know the joy of seclusion? Even a respected monarch in the south can't exchange with him. " Yi says:' When a crane sings in the north, its little crane will answer it.' The Book of Songs says,' He Ming is deep in the water, and his voice reaches the sky.' Probably that kind of thing (crane) is clean, far-reaching, carefree, broad-minded and beyond the secular, so it is compared to the sage and gentleman in the Book of Changes and the Book of Songs. People who don't show virtue, get close to it and play with it, it should look beneficial and harmless. But Wei Yigong's love for cranes ruined his country. Duke Zhou wrote about wine, and Duke Wu of Wei wrote about suppression, arguing that nothing can cause absurd disasters more than wine. And people like Liu Ling and Ruan Ji are praised by later generations because they rely on this to preserve their authenticity. Alas, the king of the southwest, even if quiet and far-reaching, carefree and broad-minded, like a crane, can not enjoy himself too much. Too much love will ruin his country. A saint who lives in seclusion in the mountains outside the secular world, even if he is as absurd, confused, depressed and confused as a drinker, can't be a scourge, let alone a love for cranes. From this point of view, the pleasure of a monarch is not the same as that of a hermit. "The mountain man smiled happily and said," That makes sense! "So, I wrote" Song of Letting the Crane Fly and Inviting the Crane ":The crane flies down in the air between the western hills, chooses the place where it goes, and suddenly folds its wings as if it is about to fall; Suddenly I saw something and I flew into the air again. All day long, I pecked at moss in the ravine and stepped on the big white stone. Fly back to the north of Dongshan. There are people below, wearing yellow hats, straw sandals, linen, playing the strings, farming by themselves, and the rest can feed you. Come back, Xishan won't stay long.