Poetry appreciation:
This poem was written by Yuan Zhen in memory of his wife Wei Zhe. "once the sea was difficult for water, it was always amber." Literally speaking, people who have seen the sea have seen its grandeur and depth, and other waters are difficult to compare with it. This also means that people who have been to Wushan know the beauty of clouds, and clouds in other places are difficult to compare with. There is also the meaning of "returning from Wushan without looking at the clouds". This is a metaphor for the unfailing love of his dead wife.