Chenqiao on the north bank of the Yellow River.

Li Yan squatted down, reached out and took out a handful of mud and sand from the river. He put his hands together and rubbed them hard, and a look of relief appeared on his face. "Chen Hedu, the concentration of river sand has increased again. Does this mean that the strong current like half a month ago will not appear again?"

The name of Chen He is Chen Min, a middle-aged man over forty years. He was hunched over and his face was full of vicissitudes. He looked like he was a miserable person. He heard Li Yan ask him and quickly replied: "Don't worry, sir. The villain has been on the Yellow River for decades and has never been inaccurate in predicting the water flow. If there is any mistake, then sir, sir, will chop off the villain's head directly."

Li Yan nodded, "Don't blame me for asking over and over again. This matter is too important. If you make a mistake, even if you cut your head, you will not be able to redeem this sin. Therefore, I will ask you again, are you sure that's the case?"

Chen Min did not hesitate at all, "The villain is sure."

Li Yan let out a long sigh and nodded with satisfaction, "You have to work hard during this period to detect the flow rate of the river at any time. If there is any change, please notify me as soon as possible."

On the way back, Li Yan met more than ten riders who rushed over to find him.

Sun Xuan turned over and dismounted, clasped his fists and said to Li Yan: "Li joined the army, have you gone to the Yellow River to see the water again?"

Li Yan nodded and asked, "What's the matter?"

Sun Xuan said: "A man has come from Guangping and brought back a letter from General Yan Shen. Recently, Jiang Guan strengthened his attack, and the soldiers in the city suffered heavy casualties. However, General Yan Shen said in the letter that he could defend so that the army would not have to send more reinforcements."

Li Yan curled his lips and smiled faintly: "Shuo Sai should have noticed the private contact between us and Jiang Guan, otherwise Jiang Guan would not have been so anxious to use strong attacks to express his loyalty. Yan Yingyuan has really made him suffer until now. He doesn't want reinforcements, but we can't ignore him. Sun Xuan left three hundred cavalry and handed over the remaining cavalry to Tang Qi and Ma Bao. Tell them that it's time to act."

Sun Xuan hesitated a little, "As we join the army, are there a little cavalry left?"

Li Yan shook his head, "No, it's only a small amount. The key to this battle seems to be outside Kaifeng City, but in fact it is whether the two of them can succeed."

Sun Xuan was silent for a moment, and did not reorganize it. Instead, he said, "There are two more things to join the army. One is that Yang Yan has drawn two elite soldiers from his own army. He has arrived in Puyang and will arrive tomorrow. The other is a secret message sent from the south bank. Only you and Lord Chen have the authority to check and crack. Now Lord Chen is going to Kaizhou to recruit soldiers, and the last general will bring you."

Li Yan nodded, took the paper tape sealed by beeswax from Sun Xuan, then took out a book from his arms, spread it on the ground, and said with a calm expression on the tape while cracking it: "Yang Yan must deal with the two armies of Tang Tong and Bai Guangen in Dezhou at the same time. In this case, he can continue to draw soldiers here. This is a concern for the war in Henan and the safety of General Zhou. However, the troops in Lu are empty. Dezhou where he is stationed is the front line, but it is also the last line of defense in southern Shandong. Send people to tell him that he should not transfer troops from there, and be careful to prevent the Qing army from breaking into Shandong from there."

Sun Xuan responded: "I will send someone to Texas later."

Li Yan had already deciphered it at this moment and looked happy.

Sun Xuan was surprised in his heart, "Join the army, what did you say here?"

Li Yan smiled and said, "Five days later, the Qing camp will be in chaos. Ding Keze will make great contributions this time. Sun Xuan, when he returns to Yanjin camp, I will write a letter to the Governor and General Liu."

That night, after receiving reinforcements, Tang Qi and Ma Bao led more than 5,000 cavalry in the entire army to urgently head west. They successively captured Wuzhi, Wenxian and other places, and met Yang Wei's army near Biyang.

During the battle, Tang Qi shot Yang Wei to death with a bow, and the Qing army was in chaos because the commander died in battle.

Ma Bao took advantage of the situation to attack fiercely and defeated the Qing army. He killed thousands of enemies and captured nearly ten thousand prisoners, and easily recovered Huaiqing Prefecture.

The two handed the prisoners to the infantry who arrived later, rushed north, and captured Zezhou, an important town in Shanxi without any defense. The prefect of Luzhou Shen Xiuzhi and the former general of Luzhou Wei Qian Zhang Que heard the news and killed the Qing general stationed in the local area, Atuha, and surrendered.

At this point, the road to Taihang Mountain has been completely opened. After being trapped for a long time, Zhang Jiayu, who was short of soldiers and food, received a large amount of supplies.

The two armies met and marched towards Taiyuan with great fanfare.

People raised troops in Pingyang, Fenzhou, Jiangzhou, Quwo and other places, and Shanxi was shocked.

The snowflake-like letter of help arrived at Jiang Guan. Shuosai was also scared at this moment, so he agreed to Jiang Guan give up besieging Guangping City and lead troops back to Taiyuan urgently.

Because once Taiyuan is broken, the road from Hebei to Shaanxi will be completely blocked. What is broken is not only the food, grass and supplies, but also the backbone of the entire northern region.

Taiyuan is far more important to the Qing Dynasty than Kaifeng and even the entire Henan, and the Qing Dynasty cannot tolerate any mistakes.

When the news reached the capital, Dorgon suddenly suspected that Zhou Xian's real purpose was to be in Taiyuan, rather than rescue Kaifeng. He sent his confidant Suksaha to lead the elite Qing army to urgently reinforce Taiyuan. At the same time, in the name of the Qing court, he ordered Haoge to send troops from Shaanxi to assist Duoduo in solving the Henan war as soon as possible.

At the same time, Liu Konghe, who had been resting in Suiyang for a long time, also began to march towards Kaifeng. Nearly 30,000 troops followed the official road from Suiyang to Kaifeng and steadily and slowly moved forward.

Duoduo did not deliberately stop him, but just asked Teng Jisi to lead his five thousand Mongolian light cavalry to harass him. Sometimes in front, sometimes in the back, sneak attacks, rapid shooting, and quick retreat, consuming the morale and energy of the army in various ways.

Fortunately, Wu Zhiying's cavalry went out to intercept with all his strength to ensure that the marching formation was not messy.

During this process, the two sides fought countless times, but did not invest too much force. Each time the casualties were within ten people, and even they retreated after a meeting, without a single casualty.

Outside Kaifeng City, the Qing army camp.

As soon as Zhang Cunren walked into the tent, he found that the atmosphere was not right. He bent over and saluted slightly, "Prince!"

Duoduo asked directly: "Zhang Cunren, can you still dig the Yellow River now and use water instead of soldiers?"

Zhang Cunren was obviously stunned for a moment, then shook his head, "Prince, the speed of the Yellow River has slowed down now and has entered the dry season. Even if the Yellow River is dug, it will not play a big role. If it were half a month ago,..."

Speaking of this, Zhang Cunren stopped. It was Duoduo who rejected his proposal at that time. "Prince, why did you suddenly remember this again?"

Duoduo's face was angry, "Shi Tingzhu, please tell me!"
Chapter completed!