To describe Liu Bei and Zhuge Liang, Liu Bei is a fish, and Zhuge Liang is water. Like a duck to water, it means to get someone who is very congenial to you or an environment that suits you very well.
before the three kingdoms period, Cao Cao was very powerful. Before Liu Bei became emperor, he was forced to be attached to the army lineup of his relative Liu Biao and stationed in Xinye. However, Liu Bei is an ambitious man. He doesn't want to be dependent on others for a long time, but only to be someone else's strategist. Just at this time, Xu Shu recommended Zhuge Liang to him as a rare talent, and Xu Shu advised Liu Bei to snare Zhuge Liang.
Liu Bei appreciates Zhuge Liang's opinions very much, and his feelings with Zhuge Liang gradually deepen. The happy Liu Bei even said to his sworn brothers Guan Yu and Zhang Fei, "I get Zhuge Liang's help, just like a fish gets water."
Historical background
At the end of the Han Dynasty, the Yellow turban insurrectionary started, and the world was in chaos. Cao Cao sat in the imperial court, and Sun Quan supported Dongwu. Liu Bei, the imperial clan of the Han Dynasty, heard from Xu Shu and Si Mahui that Zhuge Liang was very knowledgeable and talented, so he and Guan Yu and Zhang Fei took gifts to Longzhong, Deng County, Nanyang County, and asked Zhuge Liang to come out of the mountain to assist him. It happened that Zhuge Liang went out that day, and Liu Bei had to go back disappointed. Soon, Liu Bei, Guan Yu and Zhang Fei braved the snowstorm to invite them for the second time. Unexpectedly, Zhuge Liang went out for a stroll again.
Zhang Fei didn't want to come again. Seeing that Zhuge Liang was not at home, he urged him to go back. Liu Bei had to leave a letter expressing his admiration for Zhuge Liang and asking him to come out and help him save the country's dangerous situation. After a while, after eating vegetarian food for three days, Liu Bei was ready to invite Zhuge Liang again. Guan Yu said that Zhuge Liang may be in name only, but he may not have real talent and practical learning, so there is no need to go.
Zhang Fei, on the other hand, advocates that he should call alone, and if he doesn't come, he should be tied up with a rope. Liu Bei scolded Zhang Fei and invited Zhuge Liang for the third time with them. When they arrived at Zhuge Liang's house, it was already noon and Zhuge Liang was sleeping. Liu Bei didn't dare to disturb him. He stood until Zhuge Liang woke up and sat down to talk to each other.