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Cao Cao returned to Fancheng on the day he surrendered Xiangyang. He knew very well that you would not stand on a dangerous wall. Neither Cao nor Xiangyang had the power of a navy. Once the Jiangxia navy blocked the Han River, he would face great danger.

Cao Cao immediately appointed Cao Ren as the General of Zhennan and the Guard of Xiangyang, and incorporated 15,000 troops in Xiangyang, and appointed Cai Mao as the Chief Secretary, Hanyang Tinghou, and assisted Cao Ren in the Guard of Xiangyang. The other surrendered officials were all named Guannei Marquis, each with their appointments, while Liu Cong was named General Fuwei and sent Xudu to retire.

At this point, the Xiangyang Sect in the Jingzhou Sect had melted ice and snow and disappeared.

But Cao Cao was not in a hurry to return to Yedu, but continued to consolidate his occupation in Fancheng. What he was most concerned about was the construction of warships, which was directly related to his plan for the southern expedition. In order to ensure the successful construction of the warships, Cao Cao did not hesitate to leave Cheng Yu in Fancheng and presided over the construction of the warships.

That morning, Cao Cao came to the Bishui River surrounded by dozens of generals. After Cheng Yu selected the site everywhere, he finally decided to build the main shipbuilding site in the Bishui River Bay, which was also the place where Cao Cao's ships were burned a few months ago.

Cao Cao immediately looked at the lake bay below. The lake bay was nearly a thousand acres in a radius and sparkling waves. The surrounding fishing villages had long been demolished. Tens of thousands of civilians and craftsmen were busy building shipyards, and more than a dozen huge warehouses had been built.

"Can the depth of the water here be built into a big ship?" Cao Cao asked with a horse whip.

Cheng Yu has been preparing for nearly a month and has already understood these problems. He smiled slightly and said, "This lake bay is twenty feet deep and seven or eight feet shallow. It is a natural deep-water lake. There is no problem with building a thousand stone warship. I have calculated that it can start construction of warships at the same time, and thousands of warships can be built within a year."

"Where is the built warship parked?"

"Report to the Prime Minister, the warships are preparing to stop on both sides of Bishui. In order to prevent the Jiangxia army from attacking the shipbuilding station and warships, Weichen is preparing to station 10,000 troops on both sides of Bishui, and use iron chains to lock the river at the mouth of Bishui River, lay fishing nets under the water to strictly prevent the attacks of the Jiangxia army, but..."

Speaking of it, Cheng Yu couldn't help but sigh slightly. Cao Cao was stunned and asked, "What else do Zhongde has to worry about?"

"I'm worried that it's easy to hide from open guns and difficult to defend against hidden arrows. I'm especially worried that the Jiangxia army will send people to dive into the lake and bay and burn warships with tinder oil. Their tinder oil is powerful and there is no way to deal with it yet."

Speaking of tincture oil, he reminded Cao Cao inverted. He turned to Cao Ren and said, "Last time you said you got two cans of tincture oil from Jiangxia Army, are you still there?"

Cao Cao refers to the last time Jiangxia army burned Fancheng Wharf with throwing pots. Two pots were not broken and obtained by Cao's army. Cao Ren has been retained to this day and has been carrying them with him. When Cao Cao asked about it, Cao Ren immediately ordered someone to pick it up.

Soon, several soldiers rushed over carefully with two pots. Cao Ren presented one of them to Cao Cao, "Prime Minister, this is this."

Cao Cao took the pot and sniffed it. He looked at the color again. It was light yellow and clear, which was completely different from the turmeric oil that Cao army had from Puyang and Qingzhou. He then handed the turmeric oil to a tooth general and "put it on water to burn."

Teeth will take the pot and run towards the lake. After a moment, a raging fire ignited on the water. After staring for a while, Cao Cao sighed: "The fire is fierce and rapid, and it is indeed difficult to prevent."

Yu Jin whispered beside Cao Cao: "The golden-helmet general standing on the bow of the ship should be Liu Jing."

Cao Cao's pupils suddenly contracted, his eyes narrowed, and he stared at the enemy generals on the bow of the ship. The golden helmet on the leader shone in the sun, which was particularly dazzling.

Cao Cao was the first to see Liu Jing, but at this time he had no desire to pity his talents. He only had hatred in his heart, which made him grit his teeth. Liu Jing dared to show off his power in front of him.

At this time, there was another exclamation around, and a fire lit up on the river surface. Jiangxia soldiers approached the shore. Jiangxia soldiers held torches in their hands and splashed turbulent oil on the ferry. The nearest ferry parked on the docks on both sides were all lit by the soldiers. The smoke suddenly rolled on the river surface and the fire was overwhelming.

Cao Cao could no longer bear this unscrupulous provocation. He punched the city wall with a fierce punch, turned around and walked into the city, and the generals followed one after another.

Liu Jing also saw clearly when he stood on the bow of the boat. A large group of Cao army generals followed him down, and that person must be Cao Cao. Liu Jing couldn't help but laugh coldly. He could imagine Cao Cao's helplessness and anger at this time.

In the lobby, Cao Cao walked back and forth with his hands behind his back, obviously not calming his anger. Dozens of generals next to him bowed their heads and said nothing. There was silence in the lobby. At this time, Zhang Liao couldn't help but suggest, "Prime Minister, we also have tincture oil on our hands. Can we use tincture oil to burn the river and stop the Jiangxia army from provoking it."

As soon as he finished speaking, Cheng Yu's voice came from outside the lobby, "It's not appropriate to burn the river with tinea oil."

Cheng Yu walked in, bowed to Cao Cao, and said to Zhang Liao: "I actually thought of this method just now, but I asked a few boatmen. They told me that the water flows in the middle of the Han River is quite fast, and the water on both sides is slow. When throwing objects in the middle of the river, it will soon float to both sides. The same is true for turtle oil. Not to mention that we have no ships to throw them in the middle of the river, even if we throw turtle oil on the shore, it will not flow to the middle of the river at all, and it will have no meaning."

Zhang Liao remained silent. At this time, Cao Cao sighed and said to the generals: "You all go down."

All the generals walked down the lobby, and only Cao Cao and Cheng Yu were left in the hall. Cao Cao sighed and said, "When Jiang Xia was showing off his power in front of him, I had no choice but to go. It would be fine if I was very embarrassed. I was worried that my morale would be sluggish, but Jingzhou was so motivated. Now, if I think about it, I am a little too anxious to seize Xiangyang."

Cheng Yu smiled and said, "Actually, the problem is not to seize Xiangyang, but the Prime Minister did not expect Liu Jing's determination to resist. Now I have seen Liu Jing's strategy."

Cao Cao stopped and stared at Cheng Yu, "Please say Zhongde"

"It is obvious that Liu Jing wanted to use the absolute advantage of the navy to control the Han River, cut off the connection between Fancheng and Xiangyang, and then attack Xiangyang in large numbers, and confront us across the Han River."

Cao Cao frowned. Cheng Yu said it was indeed right. He also thought that Liu Jing was indeed the intention. After being silent for a long time, Cao Cao asked: "If this is the case, what should we do?"

Cheng Yu sighed and said, "I really have no other way except to take advantage of the conflict between Liu Bei and Liu Jing, but I have another suggestion."

"you say"

Cheng Yu pondered for a moment and said, "I suggest that the Prime Minister immediately transfer Cao Ren from Xiangyang and cross the Han River from Fangling County to north. While Liu Jing has not completed the deployment, only in this way can we avoid repeating Cao Hong's capture."

Cao Cao felt a little overwhelmed. He wanted to find a reason to oppose Cheng Yu, but he couldn't find it. If he dragged it on, Cao Ren did not retreat.

Cao Cao felt embarrassed, and he glanced at Cheng Yu again. Seeing that he wanted to speak but stopped, he said, "What else can you say it together."

Cheng Yu lowered his head and said nothing. Although it was difficult to speak, he still needed to remind Cao Cao.
Chapter completed!