Zhuge Liang and Guan Yu are contradictory, but they are not publicity. This contradiction comes from Liu Bei.
After Liu Bei visited the cottage and invited Zhuge Liang, the relationship between them continued to heat up. Liu Bei slowly snubbed Guan Yu and Zhang Fei, sworn brothers who shared the same bed. So Zhang Guan slowly expressed his dissatisfaction with Zhuge Liang, which may be a primitive jealousy, and no one can tell. However, Guan and Zhang told Liu Bei their feelings. Liu Bei said something that made them even more sad: "I have Kong Ming, like fish and water, so don't say anything." Guan Yu's dissatisfaction with Zhuge Liang began here, and the witty Kong Ming naturally understood all this.
Later, Liu Bei and Zhuge Liang entered Chengdu. Guan Yu is in charge of Jingzhou military affairs and has great power. There is a great intention of disobeying Zhuge Liang's orders. One thinks that he has made the greatest contribution to Shu Han, and the other thinks that he is older than Zhuge Liang and can't obey the younger generation. Of course, the most important thing is that he feels closer to Liu Bei. ?
In his later years, Guan Yu's character became more unruly. He not only rebuked Sun Quan's son for being a "dog", but even denied that General Wu Hu, who was personally conferred by Liu Bei, wanted to go to Chengdu for a competition. Later, Mi Fang and others defected to Wei, which had a lot to do with his personality. During this period, he even refused to recognize some of Zhuge Liang's ideas of governing the country. The contradiction between the two is getting worse.
Therefore, it is possible for Zhuge Liang to get rid of Guan Yu by Wu Dong's hand, so as to control the overall situation of Shu Han and prepare for the all-round Northern Expedition.
However, Liu Bei can't do this. He can't transfer the land of Jingzhou to Dongwu, let alone murder sworn brothers who are brothers. Therefore, it may be that Zhuge Liang cheated on Liu Bei, but it can't be a conspiracy between them.