Another important thing is to control the Strait of Malacca, this strategic fulcrum is really important, as long as Zhang San controls Malacca, then it is equivalent to controlling the door of Southeast Asia in his own hands.

At that time, the whole of Southeast Asia will become China's inland sea, so Zhang San has always been very concerned about the power of Malacca, and after investigation, Zhang San found a very headache, Malacca is now controlled by an Indian state called Chola State.

This Chola country not only controls the Malay Peninsula and even Sumatra Island, but also the national strength is now at its strongest, and the quality of the soldiers is very good, at least comparable to the Song soldiers.

This country not only occupies the Malay Peninsula and Sumatra, but also has a large territory in India, and the entire east coast of India from the island of Sri Lanka to the Ganges Delta is their territory, and controls a population of more than 30 million.

Such a country is almost on the same level as the Liao and Song Dynasties, with a standing army of one million, huge war potential, and more importantly, the depth is too great, Zhang San wants to fight with others, and it will take more than a month for the ship to sail to the door of people's homes, and it may not be able to fight!

But it is not without good news, the good news is that the Malay region of Chola is not connected to the mainland of India by land, and he controls these things by relying on a strong navy, which means that Chola's navy is very strong.

For this Zhang San laughed, there is anyone who will be stronger than the navy of the Ryukyus? Therefore, Zhang San decided to divide this matter into three steps, the first step is to establish an advance base, and the second part is to occupy the Malay Peninsula and Sumatra.

If the Chola Kingdom is like this, then Zhang San will not fight to India in a short time, and the two countries will make a truce, if Chola does not give up, then Zhang San will take the third step.

Or the old way to support a hostile country, and then attack the coastal cities and subdue him! A naval power like this is not a fart without a navy, and as for the navy, Zhang San has the most right to speak.

So now Zhang San has to plan the first step, to establish a forward base, Zhang San plans to choose Kalimantan Island as a base, Kalimantan Island is what the Song people called Borneo.

Borneo is at least as large as four Shandong provinces, and more than 100 million acres of land can be developed into arable land.

Besides, after the development, it may not be possible to renovate this place, even if it is not possible to plant trees. You must know that there are nearly 20 million people here in the later generations, and the population of Indonesia as a whole is 200 million or 300 million.

Therefore, Zhang San took Borneo as the focus of immigration, but not now, this time Zhang San migrated about 1.5 million people from the Hangzhou Bay area, and now all of them are concentrated in the Zhoushan area, and it takes at least half a month to send people from Zhoushan to Borneo.

What's more, Zhang San's power has not yet extended there, there are still countries there, and if you want to eliminate these countries, Zhang San needs to dispatch at least thirty ships and 20,000 marines, obviously Zhang San at this stage can't send so many people to do this.

However, fortunately, only some settlements need to be established in the early stage, and this matter can be done by sending a detachment fleet from Luzon, and the third step of the war against the Great Song Dynasty will not use so many merchant ships, so the people of Zhoushan will be transported south one after another.

In order to appease the emotions of these immigrants, Zhang San planned to send them to Tainan first, and then where to recuperate for a few days to visit the immigrant life there and learn some planting and life skills.

Then the 15-day voyage from Ryukyu to Borneo was changed to a five-day voyage and a ten-day voyage, which also gave the immigrants hope to live, so that the immigrants would be less noisy.

Since the early development required slaves to complete, Zhang San now had to arrange for Luzon to send a detachment to control the resettlement site, and also transfer some slaves to the early development.

However, the shipbuilders who emigrated from Hangzhou Bay did not move southward on a large scale, the first was that the south did not have the conditions to build large shipyards, and the second was that there was no need to maintain such a strong strength.

For the Ryukyus at this stage, shipbuilding is the lifeblood and core competitiveness, and there is an epoch-making gap between new ships and old ships, and the dispersion of shipyards will inevitably increase the risk of technology leakage.

Therefore, Zhang San, a shipyard with the ability to manufacture warships, planned to place all of them in the Ryukyus, and all the cannon factories were located in Tamsui, so that even if there were some local rebellions, they could not be quickly extinguished by the central government.

However, since the original three major shipyards in the Ryukyus were mainly changed to military in the future, it was also time to prepare for a new civilian shipyard, and this time the destruction of the coastal shipbuilding industry made the Great Song Dynasty shipbuilding fall into stagnation for a period of time.

In addition, as Zhang San's trade became bigger and bigger, cargo ships ran farther and farther, and the demand for timeliness for the transportation of some goods began to increase, which made the need for fast cargo ships urgent.

However, with the upgrading of the Ryukyu warships, the Ryukyus no longer need the advantage of the ship type to achieve victory, so the ship type of the East China Sea type warship no longer needs to be kept secret, and the East China Sea warship has been perfected after two or three years of use, gradually modified and improved.

In addition, there are a large number of mature workers in the Ryukyus and Sea Shark Island, so the ship type of the next generation of fast cargo ships will be based on the Tokai-type warships, and the demand for merchant ships is huge, so the demand for shipyards for merchant ship construction is also huge.

For example, the Netherlands, a former coachman, had more than 150,000 merchant ships at its peak, accounting for one-half of the total number of merchant ships in Europe, so it can be seen that there were more than 30,000 merchant ships in Europe at that time.

In the 17th century, although Europe had already begun to compete for maritime hegemony, it was still far from comparable with the current Great Song Dynasty, and only last year Zhang San collected nearly 20 million yuan in tolls from sea ships and maritime merchants. This still spared a lot of merchant ships in the offshore area.

Zhang San once calculated the number of merchant ships in the Great Song Dynasty in order to estimate the shipbuilding capacity and war potential of the Great Song Dynasty, and there were at least 50,000 sea ships of more than 2,000 stone in the Great Song Dynasty, and there was no problem in the good use of ancient sea ships for thirty or fifty years.

Therefore, if the Great Song Dynasty wants to keep a merchant ship of this scale, then it needs to launch at least 2,000 stone new ships a year, and more than 1,000 new ships are launched, and the shipbuilding industry of the Great Song Dynasty is very developed, which leads to fierce competition, so many shipyards and docks are less than half.

It takes about half a year to build a ship of 2,000 stones, so there are at least 1,000 docks of more than 2,000 stones in the Great Song Dynasty that can build this kind of sea ship, and Zhang San's former Hangzhou shipyard is one of the best in Hangzhou.

There are 60 docks of 2,000 stones, and more than 150 shipyards are built every year, which is almost the limit of the development of a shipyard, so if Zhang San replaces the old ships with new ships and only builds 1,500 ships a year, then he needs to build 10 shipyards of that size.

The shipbuilders needed more than one million, and this time Zhang San obtained about 800,000 shipbuilders from Hangzhou Bay, and all of them were not enough, so Zhang San was not worried that there were too many shipyards in the Ryukyus.