You should be talking about Du Fu's "Gordon", the wide sky and the howling of the ape, and the third part of "Yong Huai Bei", "Wan He Gui Jingmen".
Among them, climbing is the best of the seven methods, because the whole article is opposite. Lao Du is best at seven-character poems, while Li Bai is best at classical poems. They have different styles.
China's ancient poetry can be roughly divided into two categories: one is called archaic poetry (or "ancient style"), which began in the Tang Dynasty. In the Tang Dynasty, the new metrical poems that appeared at that time were called modern poems, while those that originated from less metrical restrictions before the Tang Dynasty were called ancient poems. Following the viewpoint of the Tang Dynasty, later generations called Yuefu folk songs, poems written by scholars before and after the Tang Dynasty "archaic poems". There are four words (such as The Book of Songs), five words (such as Han Yuefu), seven words (such as Cao Pi's Ge Yanxing) and miscellaneous words (such as Li Bai's Shu Dao Nan). The rhyme of ancient poetry is relatively free. The other is called modern poetry (or "modern poetry"), which is a new style of poetry that appeared in the Tang Dynasty.
There are two kinds of modern poems, quatrains and metrical poems. The latter consists of eight sentences, five of which are called five laws, seven are called seven laws, and those with more than eight sentences are called excluded laws (or "long laws"). Metric poetry is extremely strict, with definite sentences (except arrangement), definite words for each sentence, definite rhyme (definite rhyme position) and definite words.