Mi Fu's "Mid-Autumn Festival Climbing Haidai Tower to Compose Poems" is "Mid-Autumn Poems" (sixth and seventh of nine cursive scripts), cursive script on paper
25.2 cm in height and 36 cm in width. Collection of Osaka Municipal Art Museum, Japan.

Explanation:
Mid-Autumn Festival Climbing Haidai Tower
My eyes are so poor that the Huaihai Sea is like silver.
Thousands of rainbow lights nurture clams and treasures.
If there is no Xiu Yue Hu in the sky.
Guizhi supports the westward wheel.
Write it three or four times, with one or two words in between
My eyes are so poor that the Huaihai Sea is like silver.
Thousands of rainbow lights nurture clams and treasures.
If there is no Xiu Yue Hu in the sky.
Guizhi supports the eastward wheel.
Writing letters is also difficult.

illustrate:
Haidai Tower is located in Lianshui (Lianshui, Jiangsu Province). It is a famous scenic spot. Mi Fu often climbs the tower to overlook the vast and magnificent scenery where the Huaihe River enters the sea. In this poem, Mi Fu describes the sparkling water in Haikou, like silver pouring down the earth, while thousands of rainbows appear in the sky, giving birth to precious pearls. In the second half of the poem, Mi Fu quoted the allusion of "Wu Gang cutting down the osmanthus trees", saying that if Wu Gang had not kept cutting down the osmanthus trees day after day, the fast-growing osmanthus branches would have burst the moon wheel. Mi Fu used this to metaphor that his official career was often blocked by others and could not be fully utilized.
In the post, Mi Fu copied the poem twice, and added a line of annotation in the middle: "One or two words are good every three or four times, and lettering is also difficult." This shows his attitude towards the pursuit of excellence in calligraphy. During the Lianshui period, Mi Fu was diligent in practicing Jin people's cursive script. This post, "Burning Incense Post" and "Cursive Script Treatise" are all examples. In addition, Mi Fu often corresponded with Xue Shaopeng, discussing the purchase of calligraphy, exchanging calligraphy experience, or reviewing books. The two were the best friends in calligraphy and painting.
When Mi Fu served as the military envoy to Lianshui (Lianshui, Jiangsu Province), his favorite tourist attraction was Haidai Tower. Haidai Tower is located in Lianshui, Jiangsu Province. It is a very famous sea-viewing tower in the Tang and Song Dynasties. Since ancient times, it has been the best tourist attraction for many literati to visit and compose poems. The poet Du Fu of the Tang Dynasty once said that "the floating clouds connect the Haidai and the plains." "Entering Qingxu" is used to describe its vast and majestic landscape. It also often appears in Mi Fu's poems, such as "Incense Burning Post" (collected by Osaka Municipal Museum of Art): "The rain has not stopped for three days, and the sea is so close that it cannot be reached." It is mentioned that on a day of heavy rain, he went to the sea. The misty scenery seen from Dai Tower. In another poem "Butterflies in Love with Flowers? Haidai Tower Wandering in the Moon", Mi Fu also mentioned: "The ripples of the ages are pure and clear, and the Haidai Tower is high. Looking down at the tail of Qinhuai, the water is so green that the sky is like water, and the sky is cold. The palace is in the world." He compared Haidai Tower to the "Guanghan Palace" on the moon. When the poet climbed the tower and looked out, he felt quite independent from the world.