What does "Kunming is shallow, and watching fish is better than Fuchun River" mean?

Don't say that Kunming Lake in Beijing Summer Palace is too shallow. It's far better to watch swimming fish here than Fuchun River.

Origin: The Seven Laws and Mr. Liu Yazi by the modern poet Mao Zedong.

Excerpt from the original text: If you complain too much, you should watch the scenery. The water in Kunming, Mo Island is shallow, and watching fish is better than Fuchun River.

When you encounter some unpleasant things and complain too much, you should be alert to the harm to your physical and mental health and measure all the scenery humbly. Don't say that the water in Kunming Lake in Beijing Summer Palace is too shallow, and watching fish here is far better than Fuchun River.

Creation background of expanded material:1On the night of March 28th, 949, Liu Yazi, a leftist of the Kuomintang, wrote a poem "An Affection for Chairman Mao", saying that he would go back to his hometown to live in seclusion in a lake because of the chaos of the Kuomintang. In April of the same year, Comrade Mao Zedong wrote the inscription "Seven Laws and Mr. Liu Yazi" in return, and took Yan Ziling's seclusion in Fuchunjiang as the topic to persuade Mr. Liu Yazi to stay in Beijing and continue to participate in the founding of the People's Republic of China.

This poem is a private chorus between old friends. Mao Zedong's harmony poems, in view of the fact that the original poet Liu Yazi is complaining more and more and his health is getting worse and worse, reminisce about the old days by singing, sincerely enlighten and persuade, and express his love for his best friend. This poem is pure and elegant, with gentle and elegant language, long affection, seemingly light and sweet taste, which has great enlightenment and influence.

The whole poem deliberately downplays the political content of their three contacts, but emphasizes the cultural level between friends, thus making this poem have a strong human touch and profoundly embodying the poet's broad mind.

Comments on Famous Sentences: Ding Sansheng, Director of the Teaching and Research Section of China Ancient Literature, Intensive Reading of Mao Zedong's Poems: Mao Zedong's Answering Questions and Offering Peace are masterpieces with feelings, sincerity and characteristics. His "Seven Temperaments and Mr. Liu Yazi" is a unique masterpiece among his several seven-tone and chorus poems. "

Mao Zedong is a great Marxist, proletarian revolutionist, strategist and theorist, and the main founder and leader of the Chinese Production Party, the China People's Liberation Army and People's Republic of China (PRC). 1976 passed away in Beijing on September 9th.

References:

Baidu Encyclopedia-Seven Laws and Mr. Liu Yazi