[Putting down the rebellion of the Southern Xiongnu in Hetao] and [Defeating the Xianbei Kebineng tribe] Two consecutive temporary mission rewards allowed Lu Bu to earn a total of 10,000 points. At this time, Lu Bu was sailing down the Danshui River.

Now, Lu Bu has basically cleared the hidden dangers of the northern borders of the Xiongnu and Xianbei through the two decisive battles between Dingxiang and Dingxiang. At the same time, Cao Cao returned from a defeat at Chibi, and his vitality was severely damaged. It was difficult for him to protect himself, let alone have any thoughts on Lu Bu. Therefore, Lu Bu shifted his strategic focus to the south again, so he brought his family back to Bucheng again.

Shortly after the ship entered the Han River, he entered the Nanxiang Basin. At a glance, Lu Bu saw that the Nanxiang Plain on the east coast was now desolate, with no one inhabited thousands of miles and half a person in height. After this war, Nanxiang, the civilians fled in all directions, about 100,000 of them crossed the Han River and entered Lu Bu's territory to take refuge.

After the ship entered the water gate of the city, there was another scene. After building the valley defense line, the fields were growing well. Farmers took advantage of the slack season in the early summer to sort out and clear the irrigation ditches. Lu Bu's general book read the bill for Lu Bu. So far, the three prefectures and counties under Lu Bu's jurisdiction were enough to maintain the grain reserves of 1.6 million people in the territory for three years. Ao Cang, built in Hanzhong, Guanzhong, and three cities in the three places of the valley, had already filled up the warehouse, and a new Ao Cang must be built.

Lu Bu came to the palace and called out the system panel to upgrade the palace to the Dark Age Advanced, and then upgraded the workshop to the Dark Age Advanced, spending a total of 7,000 points. The Dark Age Advanced workshop can produce relatively precise parts. Here, the error is no more than half a millimeter, ratchets, moving pulleys, gears and other metal parts.

Of course, the high-end workshops in the Dark Ages were still unable to produce the sophisticated components used in the nineteenth century machines. But these could meet one of Lu Bu’s special manufacturing needs - the crossbow.

This kind of crossbow uses a moving pulley embedded in the arrow groove to reduce the force threshold required to open the crossbow string by half, and allows the crossbow string to be opened in multiple stages through the function of the ratchet. Because there is no need to worry about whether the crossbow string is pulled, the tension of the crossbow string can be greatly increased, thereby enhancing the initial velocity and power of the arrow.

The reason why it is called a crossbow is that it can automatically raise arrows. When the crossbow string is opened, the buckle of the buckle is loosened. The arrow in the buckle falls into the gutter under the action of gravity, and the buckle is closed again. Lu Bu uses a unique buckle design to ensure that only one arrow falls into the gutter at a time, and then locks the gutter immediately.

Lu Bu saw the restoration structure diagram of Zhuge's crossbow in his previous life, but whether it is historical records or his analysis of the structure of Zhuge's crossbow, the conclusion is that Zhuge's crossbow can only be used for "civil use", which means that the power of Zhuge's crossbow can only be used to hit a rabbit, and women and children are guarding against thieves, etc.

Lu Bu, who was proficient in mechanics in his previous life, certainly knew the reason. In order to use gravity to launch arrows, Zhuge crossbow could only use the opening of the string with the arm, and it did not have a pulley ratchet mechanism like Lu Bu crossbow, so it could only reduce the tension or displacement of the crossbow string to ensure that ordinary people could use it.

This will naturally have less power. In addition, it does not have the exquisite lock design of the Lu Bu crossbow. It uses the narrowing of the gap between the arrow groove and the arrow cassette to ensure that only one arrow is shot at a time. In fact, the arrow being shot is pressed by the previous arrow, and this friction naturally greatly weakens the kinetic energy of the arrow.

Lu Bu came to the workshop with the drawings that had been designed long ago. Shortly after he communicated with the craftsmen, the first sample of the crossbow was created. After trialing in the shooting field of the military camp, Lu Bu concluded that the range was close to that of ordinary crossbows, which could reach a hundred meters. After a short period of training for an ordinary county infantry, the rate of fire could reach the same rate of fire when the tiger archer used a bow and arrow to shoot accurately.

...

In the early spring of the tenth year of Jian'an, Liu Bei was sitting happily at the head of the head and feasting the ministers. At this time, except for the confiscation of Xiangyang, Liu Bei had occupied the six counties of Wuling, Lingling, Guilin, Changsha, Jiangxia, and Nanjun. He also obtained a large number of first-class talents such as Pang Tong, Huang Zhong and Wei Yan. Liu Cong, who was praised by Liu Bei as the governor of Jingzhou, died of illness inexplicably. In this way, Liu Bei became the lord of Jingzhou in fact and nominally.

For Liu Bei, this was a long-lost feeling. Many years later, he finally had his own foundation. No, in fact, the situation was better than when he was the lord of Xuzhou many years ago. Although Liu Bei was the lord of Xuzhou at that time, he was surrounded by powerful neighbors. All the princes around him were stronger than him and could swallow him at any time.

At this time, Liu Bei thought to himself [there are only Lu Bu, Cao Cao, Sun Quan, and Liu Zhang, and his five princes left in the world. Lu Bu is not adjacent to his territory and cannot threaten him. Cao Cao's defeat in the Red Cliff, and he has no power to threaten him within a few years. As for Sun Quan, he was an ally with him first, and secondly, he also lost his vitality in the Battle of Red Cliff, and it is also impossible to threaten him. In this case, if you do not follow Zhuge Liang's strategy to guide the Bashu land in the west, then when will you wait?]

When Liu Zhang, who was conquering Bashu, Liu Bei frowned. Zhuge Liang, who was sitting beside him, saw the clues and said to Liu Bei with a smile: "My lord is worried about entering Shu and leaving Wuming."

"The military advisor can indeed see through people's hearts. He really wants to go west to Bashu according to the military advisor's strategy back then, but I won the trust of the world with benevolence and righteousness. Liu Zhang and I are the Han bloodline of the same family and clan, and the position of governor of Yizhou was clearly enthroned by the court. Isn't my attack on Bashu ruining my reputation? More importantly, the road from Jingzhou to Bashu is difficult to reach the sky. Bashu and my Jingzhou are only connected with a Xiajiang River. If you attack hard, even if you win, you will definitely lose a lot and your vitality will be severely damaged."

Pang Tong, who was sitting next to Liu Bei, burst into laughter and said to Liu Bei: "My lord, you can rest assured. In a few days, then Liu Zhang of Yizhou will send someone to welcome his lord into Shu. After the lord enters Shu, there are not many opportunities to take Yizhou Bashu in a legitimate way? How did the lord get Xuzhou back then, how did he get Jingzhou today, and how would he get Yizhou tomorrow."

Liu Bei was overjoyed when he heard this and asked, "Has Shi Yuan already made a brilliant plan?" Pang Tong smiled without saying a word, picking up food and drinking on his own. Zhuge Liang whispered a few words beside Liu Bei's big ear, and Liu Bei suddenly smiled.

Sure enough, more than a month later, Liu Zhang from Bashu sent an envoy to meet Liu Bei. The envoy was of a high level, and it was Fa Zheng, the important minister of Liu Zhang. After seeing Liu Bei, he immediately explained his purpose and asked Liu Bei to come to Shu to help Liu Biao resist Lu Bu.
Chapter completed!