Liu Bei visited the thatched cottage three timesand finally succeeded in inviting Zhuge Liang to behis military adviser. Yet his sworn brothers， GuanYu and Zhang Fei， did not take Zhuge seriously.Before long， Cao Cao dispatched an army of 100，000 to attack Liu Bei's headquarters at Xinye. Cao'stroops were at the command of General XiahouChun. When Liu Bei turned to Zhuge Liang foradvice， Zhuge said： “Ihave to borrow yourmajesty's sword of authority in that I am f\afraidthat Guan Yu and Zhang Fei will not listen to me.” Liu lost no time in lending his sword ofauthority to Zhuge who then started to dispatch Liu's army for the defence.
Zhuge ordered Guan Yu to Lück and wait at Mount Yushan with 1，000 troops. Guan wasnot to attack the enemy but rather let them pass. He would charge at the enemy as soon as hesaw fire break out in the enemy procession. Zhang Fei was ordered to Lürk and wait in thevalley with another 1，000 troops. Zhang was to attack the town of Bowang as soon as he sawfire break out in the enemy procession. Guan Ping， adopted son of Guan Yu and General LiuFeng were ordered to each guide 500 troops to wait behind the slope of Bowang. They wouldset fire to the enemy procession as soon as the enemy arrived at the slope. Zhuge recalledZhao Yun from Fancheng to be the vanguard of Liu's army. But Zhao was ordered not todefeat the advancing enemy but rather pretend to be defeated. Liu Bei was given 1，000troops as the back up force.
Guan Yu was so curious that he asked： “We all go out to fight the battle. But what willyou do?” Zhuge Liang answered smiling， “I will sit and wait here in town.” Zhang Fei burstinto larghter and said： “We all go out to risk our lives while you enjoy your time carefreeinside the town!” Zhuge said： “I have the sword of authority. Those who disobey my orderswill be executed.” Guan and Zhang had nothing more to say， but they walked away sneeringly.
Since the generals carried out Zhuge Liang's orders to the letter， the enemy was routedZhuge's first military advice truned out to be smart and farsighted. Guan Yu， Zhang Fei andother generals in the Liu camp soon came to respect the new military adviser.