For example, the friendship between Du Fu and Li Bai, I think Du Fu and Li Bai are actually two completely different personalities, which we can see through their poems. Li Bai is wild and unrestrained, free and easy. His personality is quite free, and he is not tired of this world. If Li Bai were today, he would definitely be a free poet.
But Du Fu is completely different from him. Du Fu's poems are generally concerned about the country and the people. Du Fu always sees the miserable life of ordinary people. These two completely different people turned out to be very good friends. I think Du Fu worships Li Bai very much, which can be said to be appreciation. Although Li Bai also appreciates Du Fu, I think this feeling is definitely not as deep as Du Fu's.
Bai Juyi and Liu Yuxi are also good friends. They often write poems to each other. Bai Juyi appreciates Liu Yuxi very much, but his life experience is not so good. In order to relax his good friends, Bai Juyi often writes poems for Liu Yuxi. Li Bai and Meng Haoran are also good friends. Although their poetic styles are different, Meng Haoran appreciates Li Bai very much. Although separated by 12 years old, they are also very good friends. Looking through the history of China's ancient poems, many poets are close friends.