Fang Yuan's expected battle was in the summer and autumn of next year, but the battle that Dolgon suddenly launched was indeed slightly unexpected by Fang Yuan. At the same time, it also caused great pressure on Fang Yuan's logistics, not only the food was temporarily collected, but even the silver was temporarily borrowed.

The 200,000 taels of silver given to the capital were borrowed by Fang Yuan from debts.

Before setting out for the expedition, Fang Yuan directly borrowed one million taels of silver from the Xu family, a big official and merchant, for the military expenses of the Northern Expedition.

Fang Yuan did not issue war bonds in Jiangnan on a large scale, first, the time was in a hurry, and there was no time to wait for the return of the war bonds, which was paid directly by the Xu family, which was very convenient; Second, Fang Yuan didn't want to make a fuss all over the city that he lacked silver and food, so that the capital court would be lucky again.

Fang Yuan wanted to give the imperial court in the capital an illusion, the Jiangnan regime and the Xuanjia army were strong and strong, they wanted money and money, and they wanted food and grain, and if the two sides continued to confront each other, the imperial court in the capital would have no hope of winning, so that the imperial court in the capital could suppress the imperial court in terms of momentum, so that those brocade guards and high-ranking officials in the capital did not dare to resist anymore, and entered the city of Beijing without blood.

The Xu family is willing to borrow such a large sum of silver, first, the Xu family and Fang Yuan are a community of destiny, one is prosperous, and the other is lost, Fang Yuan recognizes Xu Cheng as his righteous son, and wants to promote and hone him to be the king of the southwest, of course the Xu family wants to repay the favor.

The second is also Chen Yuanyuan's secret facilitation. Chen Yuanyuan's status in the palace, and even the reward for her son Fang Xin in the future, the background of her mother's family is also one of the important references. The Xu family supported Fang Yuan's Northern Expedition at this time, and Fang Yuan will inevitably repay the favor in the future, and it will be on her and her son.

Fang Yuan's purpose of sending silver into the palace had already been told to Princess Kunxing, but in fact, Chongzhen and Queen Zhou only guessed half of it. It is indeed true to buy Jinyi Wei and eunuchs, but it is not because they want to murder Chongzhen and Queen Zhou unknowingly, but for the convenience of plundering silver when they enter the capital in the future.

According to historical records, after Li Zicheng captured the capital, Liu Zongmin plundered 50 million taels of silver in the capital, of which the proportion was about 20% for officials, 30% for eunuchs, 30% for wealthy merchants, and 20% for the rest.

The officials and eunuchs accounted for fifty percent of the silver they plundered, and even if half of them were handed over, they were all more than 10 million taels, which was enough to alleviate Fang Yuan's current shortage of silver.

Jin Yiwei controls the intelligence of most of the officials in the capital, as well as the case record. Although these case records are useless on weekdays, they will not arrest people. But when Fang Yuan wanted to plunder the silver, these case records were important evidence. In other words, as long as the Jinyi Guard is willing to assist in the plundering of silver, it is a one-size-fits-all and twice the result with half the effort.

The big eunuchs, the ones who know the big eunuchs best are the little eunuchs in the palace. Over the years, who are the big eunuchs in the palace, where is the land and silver they are concealing, as long as they buy the little eunuchs in the palace and expose each other, they can find out along the vine.

After sending out 200,000 taels of silver, Fang Yuan's army of 80,000 had entered the territory of Shuntian Mansion from Hejian Mansion. From Hejian Mansion to Shuntian Mansion, and even to go north to Shanhaiguan, the first stop is Tianjin Wei.

And Zheng Sen, who was stationed in Weili, Tianjin, was also a threat to Fang Yuan's northern Shangshan Customs. If Zheng Sen suddenly led his army from Tianjin Wei to attack the grain transport team in Fang Yuan's rear, the consequences would be unimaginable.

If it were in normal times, Fang Yuan would inevitably capture the strategic fortress Tianjin Wei first, and then go north to Shanhaiguan, it would never be possible to leave such a hidden danger. But Zheng Sen is nominally the governor of the imperial court and the admiral of the navy, if he dares to attack Tianjin Wei, how can he cooperate loyally with the imperial court and join forces to repel the Manchus?!

Tianjin Weili, Zheng Sen, Zhou Quanbin, and Liu Guoxuan also repeatedly discussed whether to take the opportunity to send troops to attack Fang Yuan's grain transportation team.

Zheng Sen was also facing the same situation as Fang Yuan, in a dilemma.

If it's a sneak attack on Fang Yuan! If Fang Yuan loses, the Manchu Qing will inevitably take the opportunity to enter the customs and sweep Gyeonggi, won't Zheng Sen and his gang become national sinners who are criticized in the history books?

If you don't sneak attack Fang Yuan! If Fang Yuan repelled the Manchu Qing, it would inevitably be Zheng Sen's turn to Tianjin Wei next, the two sides were already on the same footing, where was there room for peace talks? With Zheng Sen's temperament, he would rather die than bow to Fang Yuan.

After entering Shuntian Mansion, Fang Yuan thought of a way to use the power of Zhou Kui's governor Qinwang's soldiers and horses to resist the Manchu invasion, and to transfer Zhou Jian's 40,000 garrison guards stationed in Hejian Mansion to the north together.

After arriving in Tianjin Wei, Zhou Jian's garrison Ming army was stationed near Tianjin Wei, nominally to cooperate with Fang Yuan to fight north to Shanhaiguan, but in fact, it was to monitor the movements of Tianjin Wei and Zheng Sen's sailors.

Zheng Sen, who was about to move, saw that the Jinggi Garrison Wei Ming Army was also on the same front as Fang Yuan, and instead of embankment Fang Yuan's Xuanjia Army, but the Daming Naval Division of Tianjin Wei, he guessed and guessed the catty between Zhou Kui and Fang Yuan.

The imperial court in the capital is gone! Regardless of whether Fang Yuan could repel the Manchu invasion of the Manchu Tartars, the capital court was completely gone.

If Fang Yuan wins, then Fang Yuan dominates the world; If the Manchu Qing wins, the Manchu Qing will enter the Central Plains!

In this situation, Zheng Sen's Tianjin Wei had already become a dead land, and it was useless to attack Fang Yuan, so he gave up the idea of sneaking up on Fang Yuan's grain transportation team, and began to secretly gather water divisions, soldiers and horses, and then find a way out.

Under the cover of Zhou Jian's guard and Ming army, Fang Yuanshun smoothly passed through the defense area of Tianjin Wei, and saw that Zheng Sen was really knowledgeable and interesting, and did not come to a desperate sneak attack, so he directly sent someone to send Zheng Sen another letter of persuasion to surrender.

According to Fang Yuan's estimate, Zheng Sen is stone in the toilet is smelly and hard, and it is estimated that he will not surrender, so he did not wait for Zheng Sen's reply and began to speed up the march to Shanhaiguan to kill.

As soon as the army left the range of Tianjin Wei, Fang Yuan received a good report from Shi Lang from the front that he had successfully captured the old dragon head Haicheng.

Five days ago, Shi Lang led a mighty sailor, as well as a large number of soldiers and horses, to Laolongtou Haicheng and began to bombard Laolongtou Haicheng.

With the combat effectiveness of Shi Lang's water division, as well as Qi Jiguang's defense power facing the sea frontier when he built Laolongtou Haicheng, even with the help of the special combat army, as long as Wu Sangui sent 10,000 Guan Ning troops to garrison Laolongtou Haicheng, it would be wishful thinking to conquer Laolongtou Haicheng in a short time.

But Wu Sangui easily gave up the defense of the old dragon head Haicheng.

Because Wu Sangui's troops in Shanhaiguan were limited, he had to defend both the Manchu Qing outside the pass and the Xuanjia army inside the pass, which became a sandwich biscuit in the middle. Xuanning has all 40,000 soldiers and horses stationed in the 30-mile-long Shanhaiguan defense line, and he is afraid of losing it, where can he dare to divide his troops to garrison a sea city ten miles away, which only has the role of defending the sea frontier and is not important for the defense of the Shanhaiguan Acropolis?

Wu Sangui did not regard the old dragon head Haicheng as a line of defense, but as a sentry post in front, only stationed a hundred soldiers, once Fang Yuan's Xuanjia army approached Shanhaiguan, he immediately returned to the Shanhaiguan Acropolis to call the police.

Shi Lang's soldiers were bloodless, and they captured the old dragon head Haicheng without much effort.

With the fall of the old dragon head Haicheng, Fang Yuan finally found a foothold in front of Shanhaiguan. What's more, Haicheng is built on the mountain, backed by the sea, once the battle in front of the war, or Wu Sangui surrendered to the Manchu Qing, or a few Ming troops in Gyeonggi copied Fang Yuan's back road, you can also return to Weihaiwei, Shandong Province from the sea road peacefully.

Fang Yuan's army entered the old dragon head sea city five days later, because the old dragon head sea city occupied the commanding heights of the seaside, so half of the sergeants were stationed on the mountain to guard the grain and grass of the army, and half of the sergeants were stationed in the sea city and took over the city defense.