When he entered Sichuan, why didn t Liu Bei bring Zhao Yun, Guan Yu and Zhang Fei?

Because Zhang Fei and Guan Yu were guarding other places, Liu Bei could enter Sichuan with peace of mind and no worries.

I think that bringing Wei Yan and Huang Zhong without them is to give them a chance to prove themselves, after all, they all joined later, and they must pass a series of tests to gain trust.

Because someone needs to stay in Jingzhou. Jingzhou was the throat of the world and the only place for Liu Bei at that time.

Liu took the road along the river, which has been the easiest road into Sichuan since ancient times. Deng is a mountain road, that is, a mountain road where ordinary people avoid taxes and cut firewood.

Liu Bei was invited by Liu Zhang, stationed in Jiameng Pass to defend Zhang Lu, from Zigui into Sichuan, along the Yangtze River waterway, through Ba County, arrived at Fucheng, was warmly welcomed by Liu Zhang in Fucheng, and then stationed in Jiameng Pass.

Waterway, from Zigui to Sichuan, along the Yangtze River waterway, through Ba County, to Fucheng. A year later, Liu Bei gained a firm foothold in Jiameng Pass and began to seize Xichuan.

Jiamengguan - Fucheng - Fushui Pass - Luocheng - Mianzhu - Chengdu, take the waterway, and go against the Yangtze River is a serious Yangmou.

Liu Bei entered Sichuan because Liu Zhang, at the instigation of Zhang Song, Fa Zheng and others, invited Liu Bei to help resist Zhang Lu. And there is also a map of Irikawa, so it seems that Liu Bei is relatively well prepared.

In the winter of the sixteenth year of Jian'an, Liu Bei came to Yizhou from Gong'an City, arrived in Fuxian County (Mianyang, Sichuan), and met with Liu Zhang. Along with Liu Bei were Pang Tong, Huang Zhong, and 10,000 soldiers (Guan Yu, Zhang Fei, and Zhuge Liang, all of whom stayed in Jingzhou). Liu Zhang asked Liu Bei to be stationed in Jiameng County.

Liu Bei was stationed in Jiameng for a full year, and he was busy with "thickening kindness to collect the hearts of the people", and was not in a hurry to march into Hanzhong, competing with Zhang Luyi, and his troops, including those he brought and given to him by Liu Zhang, slowly increased to 30,000 people. Zhang Fei, Zhuge Liang, Zhao Yun and others only entered Xichuan later.

In the first stage, the strategists who led the troops into Sichuan with Liu Bei were mainly Pang Tong and Fa Zheng, and the military generals were Huang Zhong and Wei Yan. After Pang Tong was frustrated and died in an attack on Luocheng, Zhuge Liang personally led the main force of the Jingzhou army into Sichuan, which was the second stage.

Zhang Fei, Zhao Yun, Huang Zhong, Wei Yan, Pang Tong, Guan Yu and Zhuge Liang are guarding the old nest.

Huang Zhong, Wei Yan, Liu Feng, and Fa Zheng (who is an internal response to Liu Zhang) who are a little famous

Zhang Fei into Shu saw Guan Yu, in 211 A.D. Liu Bei entered Sichuan, in 212 A.D. and Liu Zhang turned his face, and caused the subsequent battle of Yizhou, after more than two years of tug-of-war, through Liu Bei's corps all the way to attack the city and plunder the land, plus Zhuge Liang Zhang Fei Zhao Yun and others into Sichuan reinforcements, Liu Bei finally broke through Chengdu in 214 A.D., completely controlled the entire Yizhou.

Therefore, from 211 to 214 AD, Liu Bei always stayed in Yizhou to fight, and Guan Yu continued to stick to the rear of the five counties of Jingzhou, and there were no planes and ** in the era of talking, the two naturally had no chance to meet, and the only contact could only be through manual remote letters.

But in 215 AD, a sudden incident broke this calm, so that Liu Bei, who was holding Chengdu, urgently led his army to Jingzhou, which was the Xiangshui demarcation incident that occurred that year.

And the cause of the incident, whether it is the Romance of the Three Kingdoms or the Romance of the Three Kingdoms, is mentioned, after Liu Bei conquered Yizhou, Sun Quan sent an ambassador to communicate with Liu Bei, trying to ask for the return of the previously loaned Nanjun. Located in the middle reaches of the Yangtze River and connecting the north and south banks of the Yangtze River, Liu Bei's group occupies this place, which can not only prevent Sun Quan from going up the river to threaten Yizhou, but also can go down the river in the future and have ideas about Sun Quan's territory. In the face of Sun Quan Group's requirements, Liu Bei's attitude is also very simple:

There is no problem in returning it, but it needs to wait until Liangzhou (Gansu area) is captured. At the same time, Sun Quan sent to Guan Yu's territory to try to take over the territory, but Guan Yu also sent troops to drive away, Sun Quan was furious, and ordered Lü Meng to launch a military attack on the five counties of Jingzhou.

Because the main army of Shu Han had entered Sichuan, and the southern part of Jingzhou was in the special background of a mixture of Han and ethnic minorities, Liu Bei's group's control over the four counties of Changsha, Guiyang, Wuling, and Lingling was really weak. Fortunately, at this time, Guan Yu has not made a mistake four years later, and he still has 30,000 men and horses in his hands, Guan Yu stabilized the defense of Nanjun and Wuling County on the one hand, and urgently called Liu Bei for reinforcements, Liu Bei who heard the news in Chengdu quickly led an army of 50,000 to kill back to Jingzhou, Guan Yu Tun soldiers Yiyang, Liu Bei Tun soldiers public security, and Shu Han south of the Yangtze River laid down the defense line of 80,000 troops, and confronted the Soochow Group.

Liu Bei's decision not to attack Zhang Lu was obviously made after he thought about it, and Liu Bei naturally had to consider it on the basis of his interests.

If he attacked Zhang Lu, he would lose his own troops, and Zhang Lu would not cause much harm to Liu Bei.

Liu Bei was forced to enter Sichuan, Cao Cao had already occupied the general trend of the world when he divided the world, if he attacked Zhang Lu when he just entered the circle, then Cao Cao and Sun Quan would definitely attack Liu Bei together, in this way, Liu Bei may perish directly.

Because he felt that if he attacked Zhang Lu first, he might suffer a lot of losses and let others take advantage of the opportunity.

Because this person has strong military ability and strategic vision, and Liu Bei's military strength is relatively weak.