Where does the poem "The scenery should be long and conspicuous" come from?

A poem in Mao Zedong's To Mr. Liu Yazi.

Poem Seven Laws and Mr. Liu Yazi, written by modern Mao Zedong 1949. The first four sentences of the poem trace the poet's three contacts with Liu Yazi, while the last four sentences enlighten Liu Yazi's complaints and express his ardent expectations. 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 Seven Laws and Mr. Liu Yazi, Mao Zedong

I can't forget that when I was drinking tea in Guangdong, I was talking about Ye Huang Zheng in Yuzhou.

Thirty-one years after returning from my motherland, I read zhanghua when the flowers fell.

Complaining too much can prevent heartbroken, and you should pay attention to it after a long history.

The water in Kunming, Mo Island is shallow, and watching fish is better than Fuchun River.

Liu Yazi's original poem "Feeling is Chairman Mao's Poem"

Creation is really healthy, it's hard to say that I have the final say.

Grab a seat and say five deer, blame Feng Yi for not having a car.

I regret my life, and I would rather forget an inch of Dan!

Andrew's expedition to the south is good news, and this lake is Zi Ling Beach.