As for the gold and silver mines found by Kong Tongjia, Dai Yan actually knew its source, and it must have come from Japan on the other side of China. Pen & Fun & Pavilion www.biquge.info

As a traverser, Dai Yan doesn't know how many times he has seen the world map and globe, so of course he will be able to find the location of Japan in the future.

It is basically true that Japan, as a developed country in later generations, claimed to be a country with extremely poor resources. What is not well known, however, is that Japan's lack of resources is actually relatively poor. Some of its resources are actually very rich, such as gold and silver!

In the famous Marco Polo's Travels, Japan was called the legendary land of gold by Arab merchants! Legend has it that the chains used to feed dogs and the collars used by monkeys in this country are made of gold!

In the battle of Baijiangkou in the early years of the Tang Dynasty, the Japanese sailors were blown chrysanthemums by the Tang army's sailors, so it frantically sent Tang envoys, students and monks to the Tang Dynasty to learn all the civilization systems from the Tang Dynasty and inherit the culture of the Tang Dynasty. And the economic backbone that provided this civilization introduction project was Japan's abundant gold!

As for silver produced in Japan, this is not to mention. In the 16th century, one-third of the world's silver was produced in Japan, and together with silver shipped from the Americas to the Philippines by Spain, the Chinese Empire was directly changed from a copper-based country to a silver standard!

In fact, Dai Yan had long intended to plunder Japanese gold and silver and turn it into a colony. However, in this day and age, if you want to get to Japan directly, you still have to take a lot of risk!

Sailing is actually a very technically demanding industry, and it is not something that can be done simply. It seems that the closest distance between Chinese mainland and Japan is only more than 700 kilometers, which is not very far, but until modern times, the Chinese themselves have not been able to break through the technology of direct flights from the mainland to Japan!

Because China has never been able to solve the problem of longitude positioning, in the vast sea, if there is no physical object to locate, it is extremely unrealistic to sail to an accurate destination!

Most of the time, there are two paths between China and Japan. One is to reach the Liaodong Peninsula along the coast of the Bohai Sea, and then to the Korean Peninsula, through which you can reach Japan through the Tsushima Strait. Since such a path needs to pass through the territory of Qi and Yan, this is extremely unrealistic for Dai Yan.

Another way from Chinese mainland to Japan is to first arrive in Fujian, then through Fujian to Penghu, Taiwan, etc., then through Taiwan to the Ryukyu Islands, and finally to Japan! This kind of nautical industry, which sails through a series of islands, is a typical mode of offshore navigation, and it is not a nautical industry that directly faces the blue ocean!

And this path was the main road of Sino-Japanese trade during the Ming Dynasty in later generations. During this period, the Ryukyus arose, and the Zheng family, a maritime group of the Ming Dynasty, competed for control of Taiwan with Xibaya and the Netherlands, which were actually closely related to the desire to monopolize this trading business.

Dai Yan was worried about the gold and silver on the Japanese island, and originally wanted to slowly explore this trade route, explore this trade route clearly, and then gradually control such a trade route. However, under the trend of national whaling, Japan was discovered by chance, and the rich wealth of this island was discovered, so that Dai Yan could no longer deal with the plundered resources of Japan slowly.

He must start taking it into his own hands right away! Therefore, he did not hesitate to give a fief to Ku Tongjia in order to obtain the nautical chart in his hand. At the same time, Dai Yan's approach actually has the intention of letting everyone see the grand occasion of the navigation industry and once again guiding the navigation industry to prosperity!

After Dai Yan did this, he sent a delegation of envoys to follow Ku Tong Jia during this period, and when he arrived on the island of Japan, he built a small city where he found gold and silver mines, and this city was called the Wa Nu Castle from then on, and Ku Tong Jia was the doctor of the Wa Nu Kingdom here.

Soon after the envoys arrived, they installed an extremely accurate pendulum clock, which was the latest technology that had been acquired by the Taoqiu industry at present—a standard clock with an error of less than two seconds! In this way, the location of the city on the map was determined!

With this city as the center, Kong Tongjia began to frantically capture the surrounding Japanese people, forcing them to collect gold and silver mines, and all the gold and silver mines obtained were sent to Yancheng and Taoqiu by Kong Tongjia by sea ships.

However, even with accurate charts, sailing on the seas and not being able to determine longitude often led to frequent accidents on merchant ships transporting gold and silver ore! Basically, for every three ships transported, one ship will have an accident! This is a problem that cannot be broken through by navigation technology, and it cannot be changed by the traveler who is familiar with the map!

So Dai Yan once again solved the problem of longitude through the technical reward he started when he was in Fengyi, and began to offer a high-priced reward. At this point, he gave a direct solution: make an accurate clock, a marine clock to solve! As long as you have a clock that accurately times, you can measure the local time by the change of the shadow of the sun, and by comparing the local time with the standard time on the sailing clock, you can know the longitude of the current ship at sea!

However, since the marine clock cannot be oscillated by the waves, it cannot be used to use a pendulum clock that is easily affected by the outside world. Dai Yan also pointed out the research direction of the marine clock: through the contraction of the spring to gradually release energy, in order to accurately measure the time!

The error required for a truly suitable marine clock is extremely high, and the error should not exceed 3 seconds in a day! The reward given by Dai Yan is also extremely high, out of a high price of 1 million yuan, which immediately made countless craftsmen who thought they had skills interested in it, and the study of the navigation clock made the craftsmen of the entire Taoqiu continue to put their wisdom into this industry, which promoted the rapid development of Taoqiu in material science and machinery industry in the next few decades!

And the nautical boom caused by the whaling industry also made Taoqiu enter a real prosperity!

First of all, the prosperity of the whaling industry brought about the great development of the shipbuilding industry and the military industry in Taoqiu! Originally, the shipyard in Taoqiu was only a shipbuilder who was dug by Dai Yan from Wu at a high price, and developed the technology of wheel ships. This shipyard started by building only warships, providing warships for the Juye Boat Division. After the Onozawa bandits were wiped out by the Juno Boat Division, the shipyard began to produce civilian merchant ships, and business has been tepid.

However, when the whaling industry took off, its business began to flourish. At this time, the output of one ship to launch in a month is far from enough. At such a time, Dai Yan began to use the division of labor and assembly lines to manufacture ships in large quantities in a planned manner.

In this case, the production of the Taoqiu shipyard in a month has almost multiplied several times, reaching the level of producing five ships a month! Unfortunately, even this production is still far from enough compared to the strong demand for ships in the whaling industry!

The high profits generated by the shipbuilding industry also made some of the knowledgeable businessmen in Detaoqiu excited, and they began to spend a lot of money to build shipyards. For such a far-sighted person, Dai Yan also immediately increased his support.

Dai Yan not only gave these new shipyards a financial support, but also gave a lot of technical support! Soon, a large number of boats were launched like dumplings near Taoqiu!

Even though the shipbuilding industry is already booming, the output of the shipyard is far from meeting the requirements compared to the huge demand!

People began to do everything they could to improve efficiency, fast shipbuilding, and even the safety inspection of ships began to become extremely sloppy! In today's Taoqiu, we have begun to believe in the truth that "time is money, efficiency is life"!

After the rise of the whaling industry, Taoqiu's economy ushered in a real development!

Although when Dai Yan came to Taoqiu, he built a financial system and established a preliminary steel industry, which also made Taoqiu begin to become more and more prosperous, but what really made the entire Taoqiu enter a great development and made Taoqiu's economy rise rapidly was still the whaling industry and the navigation industry!

Because whether it is the financial industry before or the humble steel industry later, in fact, they can absorb very limited employment, and cannot make the entire Taoqiu people participate.

However, the whaling industry has changed this trend! It brought about a boom in the whole country's civil aviation, not only Taoqiu, after everyone saw the huge profits of navigation, the land of the East China Sea, the common people in the eastern part of the Song Kingdom centered on Pengcheng, and a large number of people with a difficult life began to invest in the whaling and navigation industry.

It's just that the whaling ships produced by Taoqiu are too efficient, and the seafaring ships are much superior to ordinary ships, which makes the influence of other cities in the eastern Song Kingdom on this cannot be compared with Taoqiu! During this period, the Giant Whale Trading Company, with its monopoly on whale oil and ambergris, also began to grow stronger and stronger, and its power began to become extremely powerful, and no one could compete with the entire eastern part of the Song Kingdom plus the East China Sea!

The rise of the shipbuilding industry driven by the whaling industry and the rise of the giant whale trading house have made more capital pour into Taoqiu, making Taoqiu's business more prosperous, and it has also made the upstream and downstream industries related to it also begin to become developed. On top of this, the industries that have benefited the most are the logging industry and the steel industry.

The shipbuilding industry needs a lot of wood, not to mention the equipment needed to cut down trees, but some of the precision parts and equipment on the ship are required of steel, with the rise of the shipbuilding industry, Dai Yan can obviously perceive that the number of employees in these two industries has begun to rise sharply, and even some lack of people!

This kind of manpower gap is a huge gap that Dai Yanchu has not encountered when he built a shipyard and built the steel industry alone!

Not to mention anything else, in the past, Taoqiu was a huge city with a population of more than 300,000, and it is considered a big city in the world today. Although the population of the entire Taoqiu is large, most of them are actually engaged in some low-level jobs, coupled with its huge population flow, Taoqiu has never encountered a shortage of people!

Soon after the rise of the whaling industry, there was a shortage of people throughout Taoqiu! Such a scene, it is no problem to say that the growth of the whaling industry on Taoqiu has involved the entire Taoqiu!

Dai Yan knew a little common sense of economics in his previous life, and knew that this was an emerging industry that began to drive rapid economic growth! Under such a high growth, Dai Yan knows that Taoqiu will fall into real prosperity, and the bottleneck of Taoqiu's development must be solved as soon as possible!

As the commercial center of the world and the city with the largest floating population in the world, Taoqiu encounters a shortage of people is definitely only temporary, and it cannot last for a long time! In today's era, all countries in the world except for the Qin State do not prohibit the movement of population, so it is no problem for Taoqiu to absorb the population!

And the only thing that limits population growth is the infrastructure of Taoqiu!