Using a catapult to fire a stone mine, it is almost equivalent to artillery, but the distance is a little worse, a real artillery can hit a target several miles away, and the range of the catapult is about the same as a bed crossbow, and it can hit a target of seven or eight hundred paces up to a thousand steps.

Ordinary bows and arrows don't hurt the ship too much, and even if you use rockets, as long as there are enough people on board to extinguish the fire, there is basically no big threat. If you want to block the entire waterway, Liu Yin's must use firearms, a big killing weapon, the power of the stone mine is amazing, as long as it can hit the target, a stone mine will reimburse a warship, it will be a piece of cake.

Of course, the accuracy of the catapult is the biggest problem, once the stone mine falls into the water, it is like an ordinary stone falling into the water, at most it will produce a few splashes, and it will not be able to cause damage to the warship. In order to make up for the accuracy of the catapult throwing stone mines, Liu Yin decided to use gunpowder arrows as an auxiliary means of attack, and the gunpowder arrows fired from the catapult are not only accurate, but also can cover a large area of the river.

In this way, it is like building a fort by the river, which can effectively stifle the passage of the Eastern Wu warships, although it may not be able to destroy the sailors of the Eastern Wu, but it can completely block the ships of the Eastern Wu Navy from transporting heavy grain and grass to Fucheng. This move is like choking the lifeblood of Lu Kang, once the food and grass of the Wu army are cut off, it is not far from the annihilation of the whole army.

Only then did everyone suddenly realize that they remembered the firearm that had made great achievements, and it was really invincible to use this thing to deal with the Dongwu Naval Division.

Without further ado, Liu Yin immediately transferred the army. Prepare to march into Fushui. Zhang Zun and Li Qiu led troops to garrison Yu County. The rest of the battalions. After all, the Wu army still has troops stationed in Deyang and Guanghan, and if they are not dealt with, they will still be disturbed if they want to deploy defenses on the Fushui side.

Just as Liu Yin was about to set out on the expedition, he suddenly heard that the imperial court had sent an envoy to announce the edict. Liu Yin had to put down the affairs at hand and go to receive the order.

The messenger was a eunuch, surnamed Zhang, who was a waiter of the Yellow Gate, with a voice like a duck. He announced loudly: "When the weather is good, I am ordered by Zi Ming: Wu counterattacks to take Fucheng, Chengdu is in danger, and Liu Yin, the general of Anxi, immediately leads his troops back to Chengdu to secure Sheji." Chin this. ”

Liu Yin listened to the edict on the ground, and when he heard that Liu Chan wanted him to return to Chengdu, he sighed in his heart, he had already arranged a plan to break the enemy, if he returned to Chengdu at this moment, wouldn't it be a waste of his previous efforts?

Zhang Shilang saw that Liu Yin was still quiet. I couldn't help frowning and raised my voice one degree. said: "General Liu, take the order." ”

"Minister Liu Yin took the order." Liu Yin came back to his senses and hurriedly said.

Zhang Shilang rolled up the holy decree and handed it into Liu Yin's hands, and then said with a slight smile: "General Liu, Chengdu is in danger, Your Majesty is looking forward to it, just wait for the general to come back to rescue the driver, saving the soldiers is like fighting a fire, and I hope the general will make the trip sooner." ”

"No." Liu Yin said yes.

Zhang Shilang nodded with satisfaction and said, "In this case, our family will retire first." ”

After sending Zhang Shilang away, Liu Yin immediately summoned the generals to discuss the matter, and now the imperial court is asking to withdraw the troops, seeing that the plan to attack Fushui is about to fail, Liu Yin is a little depressed.

"Will not grant the order of the monarch outside, big brother, don't worry about the holy decree for the time being, when we break Wu Gou, we can naturally explain to the saint when we return to Beijing." Zhang Le didn't care about the authenticity.

Fu Yan shook his head and said: "It's not proper, it's a crime of rebellion to resist the decree and not obey it, Wenxuan, it's not in a hurry to attack Fushui, it's better for you to immediately set a letter and submit it to the Son of Heaven, with the details of breaking the enemy, I believe that the Son of Heaven has his own clear judgment." ”

Liu Yin nodded, it is not child's play to disobey the holy decree, now Liu Chan's side is indeed on fire, no wonder Liu Chan is anxious to urge him to return to Chengdu to save the driver, according to Liu Chan's character, so many imperial forest troops were transferred away from the original lack of security, and now the Wu army has entered and occupied Fucheng, but Liu Chan is frightened.

But he really doesn't want to give up on his side, now Lu Kang is risking a sneak attack on Fucheng, the long supply line is his only weakness, as long as he seizes the opportunity and stabs him in the weakness, the Shu army can easily turn defeat into victory. And if he returns to Chengdu, he will give up the great opportunity to annihilate Lu Kang, and Lu Kang has no worries, but he is afraid that the offensive against Chengdu will be more violent.

Liu Yin immediately ordered Chen Shou to write the main book, and wrote his thoughts into the book, Liu Yin asked Liu Chan not to recall the soldiers of Yuxian County for the time being, as for the defense of Chengdu, there are nearly 20,000 imperial forest troops to guard, relying on the strongest city wall in Chengdu, even if the army is under the city, I am afraid that it will not be able to break through the fortified city. If the queen is still very worried, it is better to increase the subordinates of Jianning Taishou Huo Yi into King Jingqin.

Jianning Taishou Huo Yi is in charge of the entire seven counties of Nanzhong, although he does not have the name of the governor of the city, but he has the fact of the governor of the city. On the side of the Wei army, Huo Yi wrote several times to request to lead troops to reinforce Chengdu and protect the safety of Chengdu. However, Liu Chan did not agree, the situation in Nanzhong has always been unstable, and the governors of the prefectures have always been mainly based on conquest and appeasement, and the combination of grace and power can effectively deter those barbarian tribes.

The deeds of Zhuge Liang's seven captures of Meng Shu have always been talked about, but it seems to be a bit exaggerated, those barbarians in Nanzhong have been rebelling continuously, if it weren't for the talent and wisdom of those governors, Nanzhong may have been out of the control of Shu Han long ago.

Huo Yi did not break the mind of returning to Chengdu because of Liu Chan's refusal, he has been paying close attention to the movements of the government and the opposition, and when he heard the news of the entry of the Wu people, Huo Yi immediately dispatched 20,000 horses from the south, and went north to the county and drank the Yangtze River. For this reason, Huo Yi specially transferred 20,000 horses from the limited forces in Nanzhong, personally led it, and went north to rescue Chengdu.

Liu Yin also knew these news, although Huo Yi's soldiers were not many, but they were mountain warriors who had been fighting for a long time, and when necessary, he could let this army help defend Chengdu.

What's more, Liu Yin does not think that the Lu Kang Army, which has been cut off from the grain route, still has the intention of annexing Chengdu, as long as his own side succeeds, Lu Kang will definitely fall into the dilemma of lack of grain and grass, and there is no spare strength to take Chengdu again.

The messenger left Yuxian quickly, and the horse flew like a flying horse, although there is no guarantee that Liu Chan will be able to see the twists and turns tonight, but if everything goes well, Liu Chan will know at the latest tomorrow, Liu Yin is still looking forward to Liu Chan's actions. For the Shu Han court, whether it can survive this crisis safely depends on success or failure. (To be continued......)