Because of the news of the civil strife in Great Xia, which was unexpected by Su Ziheng, coupled with the huge oil reserves of the desert oil wells in Mobei, Su Ziheng began to collect energy day and night, delaying the return of the party to Donghai Mansion.

Originally, in Su Ziheng's plan, after the base space collected enough energy, he would immediately return to Donghai Mansion, and it was originally estimated that three or five days would be enough.

Who knew that after starting the 3D printer, the collected energy fell down like flowing water. Thankfully, however, the result was satisfactory, with enough breech-loading flintlock pistols to arm a legion, as well as a hundred cannons and dozens of steam engines and machine tools.

Because of the printing of such things, it took more than half a month to delay. Fortunately, during this period of time, there were no pursuers who tracked down the Mobei Desert. It is estimated that Meng Ke himself did not expect that Bo Yalun not only did not go to Yanmen Pass, but also did not even return to Qing'an, but came to such a place where birds do not.

During this period of repair, the members of the escort team were not idle, although there were no pursuers to track down here, but there were still many Mengyuan herdsmen who came to the location of the oil well.

They were all to collect oil and burn it for use, and in order not to disturb the collection of energy by the Shenlong warship, Su Ziheng ordered the escorts to disguise themselves as horse thieves and wander around the neighborhood to drive the herdsmen closer.

By the way, rob some food, although Su Ziheng brought a lot of dry food, but every day to gnaw on jerky, eat too much will still get tired, at this time they have to go out to hunt some prey and come back to improve the food.

……

……

Half a month has passed, and it is almost the New Year, and it is very close to the two months when Su Ziheng promised Zhong Qinghan.

In the Mobei Desert, the energy replenished by the oil wells here is enough, in addition to the various tools and weapons printed out, the energy in the base space is also completely replenished, and Su Ziheng decided to leave to return to the East China Sea Mansion.

As early as when he arrived at the Mobei Desert, when Su Ziheng used a wireless telegraph to communicate with Donghai Mansion, he asked Donghai Mansion to send a new team of sea ships with 5,000 sailors to Beihai to pick him up.

As for the sea ships that originally docked at the overseas hidden ports of Jinzhou Prefecture, Su Ziheng no longer reported hope. Because he didn't plan to enter the Jinzhou Mansion from Yanmen Pass, the sea ship was not piloted.

In addition, he suspected that after Deng Zhilong disappeared, his subordinates would definitely find the ship, one to investigate the news, and the other to wait for the rabbit.

Su Ziheng naturally will not be afraid of them waiting for the rabbit, the most important thing is that the road to Yanmen Pass is full of Mengyuan cavalry, if you really want to encounter it, even if your weapons are advanced, in front of the vast sea of people, it is still not enough to see.

In order to avoid trouble, Su Ziheng still decided to enter the sea from the North Sea. Although it is winter at the moment, many ports in the North Sea are frozen, but Bo Yalun knows that there is a natural ice-free port, which is very suitable for landing, and it is not far from the straight line position of the desert in Mobei, less than five hundred miles, and it can be reached in three or four days day and night.

According to Bo Yalun's instructions, Su Ziheng told the people of Donghai Mansion the coordinates and asked the fleet to arrive at the designated port to pick him up.

As for the 5,000 sailors he brought, one was for safety, but the main reason was to exterminate the pirates in the North Sea.

The pirates in the East China Sea have already made the East China Sea Prefecture Navy sweep from time to time, and they are almost wiped out. However, in the past, they did not go out of the East China Sea, and many of the pirates who were besieged fled to the North and South Seas.

This time, Su Ziheng was put on the side by Deng Zhilong, the king of the North Sea, and he naturally would not give up, he decided to use this opportunity and excuse to besiege and kill the North Sea pirates again.

Now that Great Xia is in a civil war, it can be expected that the world will become more and more chaotic in the future, and Donghai Mansion needs a lot of funds whether it is for self-protection or development.

As the saying goes, people are not rich without windfall, and horses are not fertile without night grass. If you want to make money quickly, there is no better than robbery. But if you rob ordinary people, the reputation of Donghai Mansion is too bad, so robbing pirates is a good choice.

What's more, this time the North Sea King Deng Zhilong also gave him such a good excuse, if he didn't use it, it would be really embarrassing.

When Su Ziheng received the news that the fleet had arrived at the port, they set off from the Mobei Desert.

During the time when the fleet was waiting for Su Ziheng and the others to arrive, the sailors were not idle, except for a waiting sea ship, the other ships had already begun to sweep on the nearby islands.

When Su Ziheng arrived at the ice-free port, he happened to encounter the fleet that had returned from the sweep. The ice-free port is an economically developed area in the North Sea, and many fleets from other places will land at this port, so there are pirates on many overseas islands.

It's winter season now, and many pirates are lazy on the island on weekdays, and they happen to be served by the Donghai Prefecture Navy Army. In just three or five days, the navy swept two islands, exterminated two waves of pirates, and seized a lot of property from the pirates.

It's a pity that the North Sea is relatively backward, and the pirates are not as rich as the pirates in the East China Sea.

The gold and silver treasures are even more pitiful, and the most important thing is some goods, mainly furs and medicinal herbs. If these things are exchanged for money, they have to be transported to Great Xia or Southern Zhou to get a large price, but for these pirates, where do they know how to do business except for robbery?

Therefore, they often rob a lot of things, and then cooperate with some other pirates to dispose of these goods at a low price to some colluding merchants, and most of them are exchanged for food and daily necessities.

Merchants who trade with pirates will generally wait until the beginning of spring to thaw before going to sea to trade with pirates, the weather is too cold in winter they are reluctant to move, another reason is that things are exchanged, they can not be transported to Great Xia or Eastern Wei or Southern Zhou in time to sell, and they have to pay storage fees, which is too troublesome.

Who knew that in this way, it happened to be cheaper for the sailors of Donghai Prefecture, and although the confiscated property was not very valuable, it was much better than things like food.

With the harvest of a large number of crops such as potatoes, sweet potatoes, and corn, there is no shortage of grain in Tohae Province at all, and it can even be sold to the outside world.

Now that winter is coming, many people in the Eastern Wei Dynasty will freeze to death and starve to death in previous years, and the main reason is that there is not enough food.

This year, the Eastern Wei Dynasty learned that the autumn harvest in Donghai Mansion was a bumper harvest, and many anti-kings put forward proposals to exchange population for food. Zhong Qinghan naturally agreed to this without hesitation, anyway, food is not worth much to her at all, and the population is different.

And those anti-kings in the Eastern Wei Dynasty thought the opposite, for them, those who starved to death would die anyway, and it was better to change food.