To establish peace part 5 of part 1 has:
The Chancellor of Xiapi, Cao Bao, had been an officer under Tao Qian.
He fell out with Zhang Fei and Zhang Fei killed him. There were riots in the
city. Yuan Shu wrote to Lü Bu, urging him to attack Xiapi, and promised him
help with his supplies. Lü Bu was very pleased, and he led his army east
down the [Si] River by water and land.4 The General of the Gentlemen of the
Household Xu Dan of Danyang, one of Liu Bei's officers, opened the gates
and received him. Zhang Fei was defeated and fled. Lü Bu captured Liu Bei's
wife and children and the families of his military and civil officers.
Fa Zheng signalled to Liu Bei who then ordered Huang Zhong to charge which resulted in Xiahou Yuan death. Huang Quan offered numerous strategies in HanZhong and was in charged of Shu Han navy. Their roles were at least equal to Zhao Yun.
And Zhang Fei had 11 men when he screamed at 5000 elites.
Because none of Cao men wanted to fight him? Agreed. Then why didnt Zhou Yu praise Zhao Yun.
For Guan Yu:
16. The General of Chariots and Cavalry (juji jiangjun) Zhang Fei was brave and martial, second only to Guan Yu. The counseling ministers of Wei, such as Cheng Yu, all said that Guan Yu and Zhang Fei were each the match of ten thousand men.
26. Some time ago the Emperor had commanded his body of officials to hazard a conjecture as to whether Liu Bei would issue from his domain and avenge Guan Yu on Sun Quan. The consensus was, "Shu is but a petty state and has had only one general of renown, Guan Yu. Now that Guan Yu is dead the army is overthrown, the whole country is possessed by worry and fear; Liu Bei has no chance of issuing from his domain."
viewtopic.php?f=23&t=22087Liu Bei also gave Guan and Zhang higher rank than Zhao.
Zhang Fei than Zhao Yun. Zhang Fei was trusted with Xiapi and later BaXi. He was also expected to be in charge of HanZhong by many people.
Liu Bei did nothing wrong.