The north gate of Haizhou City is called Linhong Gate, because this city gate faces Linhongkou.

Linhongkou usually looks from afar, it is a large floodplain, which is covered with reeds in autumn, in fact, it is the estuary wetland, which is the mouth of the Rose River and several other rivers.

The Ming Dynasty built a sluice gate at the mouth of the flood, which usually intercepted the river water, in order to ensure the amount of water and ensure the transportation of salt ships, and during the tide period, it was to prevent the sea water from pouring into the destruction of farmland, and even stationed a team of soldiers all year round to defend.

But the main role is to ensure the smooth flow of the canal, the canal first this is a national policy, implemented for hundreds of years, during which there have been many contradictions, such as drought, the canal in order to unblock the gate not to open the water for irrigation, so that the crops die of drought, so that farmers have no harvest, when the flood, the canal is unwilling to discharge floods, or let the fields have no harvest.

For the Ming Dynasty, ensuring the smooth flow of the canal is more important than ensuring the agricultural output of the Jianghuai region, because since the Song Dynasty after the Yellow River seized the Huai into the sea, the Jianghuai region has become a flood and drought area, a large amount of sediment of the Yellow River water will push the river bed here, the coastline to the sea, and often burst, the Jianghuai region has lost the status of the Tang and Song dynasties in the south of the Yangtze River.

On the contrary, the area south of the Yangtze River has been reclaimed, and the area centered on Suzhou has become a new land of fish and rice, replacing the Jianghuai region, and the development of Huguang in the middle and late Ming Dynasty has made Huguang the granary of the world, and whether it is the rice grain in the south of the Yangtze River or the rice grain in Huguang, it must be transported to Beijing and other northern regions through the Grand Canal.

Therefore, the canal is obviously more important than the agricultural output of the Jianghuai River, so the purpose of various water conservancy projects is not to prevent waterlogging and conservative, but to become a thoroughfare.

Not to mention the estuary like Linhongkou, there are sluices built on the canals leading to the sea from salt shops like Bian Jiapu.

However, the sluices of those canals are generally closed. It will not be turned on unless it is to divert seawater.

Yang Chao stood on the north wall of Haizhou City, which is a position on the west side of the north gate, and this position is very special. Because there is a temple behind him, called Yuwang Temple. King Yu is the great Yu who controls the water, because of the work of controlling the water, it is said to be the water god sacrifice, there are such temples all over the country, although the scale is not as good as the temples such as the Guandi Temple and the Yuewang Temple, but it is blooming everywhere in the south.

The Yuwang Temple of Haizhou City was built on the west side of the north gate, with the purpose of using the divine power of Dayu to deter the northern flood mouth and prevent floods.

Next to Yuwang Temple is a canal. In fact, there is a canal in the city of Haizhou, just like Nanjing has the Qinhuai River, most of the cities in the south of the Yangtze River, as long as the conditions permit, will generally open the canal, after all, the wise ancients have long found that the opening of a canal is very important for the transportation of goods, even if the government does not care about the convenience of merchants, but needs to consider the guarantee of huge quantities of materials.

The canal of Haizhou City leads to the four gates of the southeast, northwest and northwest. Finally, it flows from the West Gate into the Rose River, which connects it to the inner city and forms a dock market on the canal bridge in the center of the city. It is known as the City Bridge.

So as long as you take a boat from the city, you can go directly to the outside of the city, but unfortunately, the resourceful Zhizhou also sealed the water gate, saying that it was to prevent the enemy from sneaking attack.

Yang Chao wasted a lot of words and words, and finally got through Song Lian, dug up the water gate of the north gate again, and dredged the canal.

At this time, there were several boats on the canal at Yang Chao's feet. Above are slightly panicked soldiers.

These were naturally not Yang Chao's soldiers, but a group of gate soldiers who were supposed to be guarding the gate in Linhong.

And now their task is. Go to Linhongkou again, and there will be captives outside the city. It's no wonder they're not afraid.

Fortunately, Yang Chao sent someone to protect them, otherwise they would not have been killed.

Even threats and intimidation, these people finally got killed!

Three more days have passed since the mountain god was angry, and Yang Chao has built three small boats, which can carry a hundred people to set off, but the captives have not taken any action, and if they don't act, Yang Chao has to act, so today he finally let people set off from the reopened water gate.

Watching the boat go out of the water gate, appear in the moat outside the city, go northwest, and finally enter the Rose River, during which the captive camp was closed, and not even a single horse appeared, Yang Chao returned to the city with confidence.

Linhongkou is less than ten miles north of Haizhou City, although these small boats are not fast, but a day is enough time for a round trip, these people should be able to come back tonight, if the plan is successful, probably the captives will have to move again, provided that they still do not plan to retreat.

The boat left, and Haizhou City was still running as before, but the power of the big explosion was gathering in the calm.

If he couldn't repel the captives before the explosion, Yang Chao thought that he couldn't control it, but a big chaos was inevitable, and when he thought that he had to suppress the civilians with his own hands, Yang Chao couldn't help but feel a shadow in his heart.

Some workshops were inspected in the city, and the handicraft workshops of the whole city were now almost in the service of the military, and the energy that burst out was quite enormous.

Anyway, a piece of iron armor is constantly being built, a bird gun is constantly being made, a long spear, and countless military materials are constantly being manufactured, if it weren't for the fact that casting cannons is really time-consuming and laborious, Yang Chao would not hesitate to ask Haizhou to help cast cannons.

Anyway, in addition to food, other materials in Haizhou can't be consumed, like iron and wood are very cheap, or after the grain is controlled, other materials are almost depreciated, of course, even if it is not depreciated, Song Lian of Haizhou canonical history requisitioned, he dared to forcibly take it away, Yang Chao sometimes found that the attitude of these civil officials towards the property of the people is no different from that of military generals, as long as there is an excuse if necessary, he will never hesitate to take it.

However, Yang Chao did get the biggest benefit, and now he has received a thousand bird guns, and the number continues to increase, and now it can increase at least thirty or so per day, and the spears have accumulated 10,000, and after equipping the people, there are still 6,000 stocks, and the iron armor has 3,000 collars, but Yang Chao did not give the people Zhuang equipment, all of them are placed in his own warehouse, there is no doubt that once he leaves Haizhou, these are Yang Chao's private goods.

I don't know whether it was intentional or not, Song Lian seemed to forget all this, and let Yang Chao continue to grab all kinds of military supplies from Haizhou.

Maybe he tacitly accepted these as Yang Chao's military expenses.

Linhongkou is a country, like a huge mirror, and the sandbanks are like pearls dotted on the mirror.

A winding chain connects the pearls.

Unlike the necklace, the chain is made of stone, which is a complex embankment.

Extending from both banks, through the sandbar at the mouth of the river, the estuary is completely separated from the sea more than ten miles away, and it has to be said that just by relying on this seawall, you can feel the fierce ambition of the dynasty that built him in the first place.

I heard that this seawall began to be built in the Song Dynasty, and the Yuan Dynasty would rather not build the city wall, and always maintained the seawall, the purpose of which is just to protect the salt-producing Huaibei coastal area.

Three small boats appear here, and compared to these buildings, they seem insignificant, like waterflies lying on the water.

The people on the ship were completely relieved, because they had not encountered the Tartars along the way, and they arrived here safely, and the Tartars did not even occupy this place.

Soon they were at one of the seawalls, where there were special stairs for them to go up, and there were even sturdy structures built on them, with ingenious levers inside that allowed them to lower the rocks.

As the thick iron chain slid, one by one, the dam stone slipped from the reserved position, instantly stucking the bottom and blocking the flow of water to the sea.

That's right, their purpose is not to open the dam and open the gate to release water, because the seawall in front of the station has always been in a semi-open state, because there is neither a flood nor a tide, so the dam stone did not block the sea dam, and now what they have to do is to seal the dam stone piece by piece.

The soldiers who protect the flood mouth may not be well-trained soldiers, but the qualified water workers who take care of the dam, in their hands, the dam stones are obediently manipulated, walk through the embankment, and are busy until the afternoon, and finally successfully complete the mission.

Then they started their return journey.

The boat slid on the calm water, the thick reeds on the shore had been submerged, and the fish in the water jumped to the surface with excitement.

Yang Chao inspected the situation of the workshop for a day, mainly concentrated in the blacksmith and carpenter workshop, the blacksmith workshop is naturally very important to build military materials, but with the control of Chen Jin, the quality has always been very good, and the carpenter's workshop is busy building wooden boats.

The requirements for these wooden boats, Yang Chao does not require how strong, the only requirement is that the draft is shallow, even in three or five feet of deep water, it can be easily driven, on this basis, of course, it is better to be able to carry more people, so the carpenter has no choice, that is, to build a flat-bottomed boat, for which they have some pity.

Because of Haizhou's proximity to the sea, the craftsmen here are still capable of building sea ships, and a lot of wood they have stockpiled is enough to build three-masted ships, but now it is a waste to use them to build flat-bottomed ships.

But this is the military, never consider efficiency and cost, for the military, to be able to win is the most efficient, that is, the smallest cost, once lost, that is the most inefficient, the biggest cost.

Since there are excellent craftsmen in Haizhou, Yang Chao is not too worried about the quality of the ship, and he went to see the training again.

That's right, even if the captives seem to have given up the attack, but the training of the people in Haizhou City has not stopped, Yang Chao found that after the baptism of blood, many of these people have the conditions to become elite soldiers, in the final analysis, soldiers still have to kill people and see blood, training is not a problem, and those who have seen blood are the most precious.

Yang Chao already has the heart to recruit a group of thousands of troops to supplement him, and he believes that after he wins this battle, it should not be a problem to move, and he has made such a great contribution, and the troops to be replenished in the future are not just a thousand troops, it is likely to be the entire new Jiangkou battalion.

The soldiers who finally came back from Linhongkou let Yang Chao end the inspection in the city, warmly received them, and then regardless of whether they were their own soldiers or the sailors guarding the gates, Yang Chao gave one hundred taels of silver, if the siege of Haizhou can be completely lifted this time, then what these people do today is the most important, it can be regarded as the first work! (To be continued).