In order to obtain the shotguns made by the Qi family, the Ryuzoji family eventually agreed to turn Nagasaki into a free trade port similar to Sakai City, and in order to dispel the Ryuzoji family's doubts about safety, the security of the port of Nagasaki was jointly handled by the Qi Province and Ryuzoji Temple.

Of course, like the Oda family, the Ryuzoji family did not receive the treatment of a formal official peace treaty signed by the Qi state:

The contact with the Oda family has always been the Shuangyu Li family, and there is no official connection between the Qi state and Oda.

And the Ryuzoji family is just an open market under force of force.

The state of Qi still reserves the right to conquer the dragon temple family at any time.

Of course, the Qi State has not yet thought of doing so, and they are very satisfied with turning Nagasaki into a free trade port.

From then on, Qi merchant ships could sail directly to Nagasaki, where they exchanged goods such as shotguns, gunpowder, buckshot, sea salt, and woolen cloth for gold, silver, copper, sulfur, volcanic ash, and slaves.

In order to help Fusang increase the production of silver mines and increase the amount of exports, the Academy of Sciences, which was jointly established by the three universities of Qi and the Qi Palace, also taught the Fusang people the method of soot blowing to increase silver production.

At the beginning of October of the fourth year of Longdao, the first slave ship returned to Dengzhou from the port of Nagasaki, and this medium-sized fortune ship brought 192 middle-aged Fuso men, 65 women of childbearing age, and 22 children to the Qi country.

All the Fuso people on this ship were captured by the Ryuzoji family in battle with other Fuso daimyos, which was also the beginning of the large-scale trafficking of Fuso slaves in the Qi Kingdom.

……

The Qi fleet did not just visit the Ryuzoji family, in fact, they made contact with more than a dozen daimyo on the two large islands of Fuso, Honshu and Kyushu, and reached initial trade agreements with five of them.

In addition to Nagasaki, the Qi state was granted the right to conduct limited trade in the other three ports - plus the two free ports of Nagasaki and Sakai, a total of five open ports, which is enough for the current Qi state.

In addition to the traditional Fuso mainland, in order to manage the trade between Goryeo and Fuso, and to control the Tsushima Strait, the most important shipping route into the Whale Sea, the Qi navy also launched a large-scale attack on the Tsushima clan.

The troops participating in the offensive included more than 20 warships and more than 50 transport ships of the Qi Navy, and nearly 5,000 naval and marine corps.

There were more than 100 large and small warships of the Goryeo Naval Division, 2,000 naval divisions, and 5,000 Goryeo New Army.

The total strength of the Qigao coalition army was 12,000 people, and there were more than 150 large and small artillery, including 8 siege mortars that could fire 30 catties of artillery shells.

Whether it was strength or firepower, the Qi army had an overwhelming advantage over the defenders of the Tsushima clan.

Trapped on an isolated island, there is no way to advance, and there is no way to retreat. Fight, can't fight, can't defend.

In desperation, the head of the Zong family was forced to carry Jing on his back and open the gate to surrender according to the requirements of the Qi army.

At the same time, the Qi army also occupied Iki Island, plus Jeju Island, which was ceded to Qi by Goryeo, and Qi completed the complete blockade of the Tsushima Strait.

As a means of strengthening control over the three islands of the Tsushima Strait, all the Fuso people on Tsushima and Iki Islands were reduced to slavery by the Qi State, and half of them were to be relocated, and the remaining half were to participate in the construction of the Tsushima fortress.

Tsushima Island is a crossroads between the Whale Sea and the Yellow Sea, Goryeo and Fuso, the geographical location is very important, in order to ensure the safety of this island, the Qi State did not spare the lives of Fuso slaves, using volcanic ash and a large number of stones, local fire bricks, began to build the first real fortress on the island.

The Qi military department intended to garrison a standing army of 800 men on the island, including a patrol ship detachment of the navy and a fortress artillery unit of the army, and then the militia.

The fortress will be equipped with 20 catties of fortress guns and 8 catties of guns that can be quickly maneuvered, and Xu Shiyang firmly believes that without a hundredfold superiority in troops, neither the Fusang nor the Goryeo will be able to seize this island from the Qi State.

……

In August of the fourth year of Longdao, a fleet of Qi arrived at Shuri, the royal capital of the Zhongshan Kingdom in the Ryukyu Islands.

The Zhongshan Kingdom had always been a tributary state of the Great Zhou Dynasty before, but they also had a close relationship with the Fuso daimyo Shimazu family.

Now that the famous Qi people are here, they have strong force and do not hesitate to use force, and the Zhongshan Kingdom naturally accepts the fate of being a vassal to Qi very respectfully.

In September of that year, the envoy of the Zhongshan Kingdom arrived in Quancheng and accepted the seal letter and banner given by the King of Qi.

The king of Qi canonized the king of Zhongshan as the prince of the county and gave him the surname Shang.

At the same time, the Zhongshan Kingdom was renamed the Ryukyu Kingdom, and with the support of the Qi army, it was ready to launch an attack on the other two kingdoms on the Ryukyu Islands: Shanbei and Shannan.

Of course, the state of Qi is not the Great Zhou, and it has never been the habit of giving more than a tribute diplomatically, and since the king of Qi has given it so generously, the Ryukyu Kingdom must give double the reward:

First, after conquering the two kingdoms of Shanbei and Shannan, all the captive population, Qi Guodi divided sixty percent as slaves.

Second, the four items of defense, foreign affairs, education, and customs of the Ryukyu Kingdom were under the guidance of the Qi State advisors, and at the same time all ties with the Fuso daimyo Shimazu family were severed.

Third, the Kingdom of the Ryukyus was fully open to Qi and allowed Qi people to open factories and build houses in Ryukyu.

Fourth, the Qi State has extraterritorial jurisdiction in the Ryukyus, and the crimes committed by the civilians and above in the Ryukyus can only be extradited to the Qi State for trial, and the same applies to the crimes committed by the Ryukyuan people against the Qi people.

Fifth, Qi "leased" the port of Naha.

Sixth, the two families are harmonious, and the granddaughter of the king of Zhongshan will marry Xu Shixing, the fifteenth youngest of the Xu family (Xu Muhe's youngest son who has just turned 4 years old, and Xu Shiyang's half-brother, but younger than Xu Shiyang's eldest son).

With the bloodless submission of the Ryukyus, coupled with the increasing consolidation of the alliance between the two families of Xu and Li, the Qi state had actually completed the strategic encirclement of Fuso from the sea.

At this point, if necessary, the Qi army could directly intervene in the civil war between the Fuso daimyo at any time.

It's just that the people of Fuso are unaware of this.

……

To sum up, before November of the fourth year of Longdao, the Qi navy completed the exploration of the mouth of the Molongjiang River, controlled Tsushima Island and Iki Island, and forced the Ryukyu Kingdom to pay tribute, which can be described as a great gain.

In the next stage, Qi is ready to expand the scope of development.

The first is the direction of the Whale Sea:

First, on the side of Pingyu City, it will go west along the Molong River, develop the land on both sides of the river, and capture the Jurchens as much as possible to supplement the local labor gap.

Second, on the other side of the Whale Sea, there will be the development of Sakhalin Island, where there is a group of fishermen and hunters known as Kuyi, who can be used to subsidize labor.

Third, the Qi State was preparing to develop the island of Hokkaido, which was not under the control of Fuso at this time, and the natives of that island were of the same origin as Kuyi, and did not deal with the Fuso people, so that they could not only subsidize the population, but also threaten the island of Honshu in Fuso from the north.

In addition, Hokkaido is a large area and the climate is suitable for horse breeding, so Xu Shiyang hopes to develop it into a large horse farm.