However, in the Pacific Ocean, it is fast to go from east to west, and from west to east, you have to go around the dimension near Japan before you can go east with the wind, so it is much slower.

Therefore, Marin was also unable to receive the report from Conté for the time being. There was no way, there was no transoceanic wireless telegraphy in those days, and Marin had to wait a few months before making a decision.

But with Marin's character, he will definitely not let go of this business. In an age when there are no other distant-water fishing vessels on the ocean, Marin's shark fishing team is probably the only one dedicated to shark fishing.

In the North Sea, where fisheries are extremely rich, and in the fishing grounds of Newfoundland, which is even more abundant, there are simply a lot of sharks. As long as you order the construction of a few more professional shark fishing boats equipped with thickened trawls with winches, it is not too convenient to catch sharks.

If you catch 10,000 sharks, peel off the shark skin, and send them to the Ming Dynasty, you can exchange them for tens of thousands of taels of silver. Moreover, it is very popular. After all, there are so many greedy officers in the Ming Dynasty who have the Yanling Sword, and the market demand is huge.

Of course, a fool would take shark skin and sell it directly for money. The best way to do this is to use shark skin and exchange it for the most sought-after silk and porcelain. Then, ship it back to Europe and sell it for a big price! This time, if it is 10,000 shark skins, it will not only sell for 10,000 taels of silver, but can earn tens of thousands of taels of silver or even more!

The most important thing is that this thing is in short supply!

In addition, Marin was actually ready to order someone to be sent to find the legendary Hawaiian Islands. When the time comes, find Honolulu in the southeast of Oahu, and you can also cut down the mountains of sandalwood at will.

You must know that in the Ming Dynasty, sandalwood was also very valuable, worth more than half a tael of silver. And in Honolulu, when later generations discovered it, the mountains were full of sandalwood trees, which were easy to collect.

Moreover, Honolulu in later generations is also an important whaling and fishing base, and it is completely possible to set up a shark fishing team again to catch sharks while cutting down sandalwood. Then, the shark skin and shark fin were sold to Daming nearby......

In fact, Marin is now preparing to sell shark fin in large quantities to Daming. But now, it seems that there is no trend of eating shark fin in Daming. On the contrary, it is shark skin, which was processed into delicacies during the Song Dynasty. Don't look at the shark skin is very rough, but if it is processed properly and the fire is enough, it can also be made into high-end deliciousness.

But the Song Dynasty was different from the Ming Dynasty, the Song Dynasty was very open, and there were many fishing boats on the sea, so there was no shortage of shark products. The Ming Dynasty did not end the sea ban until the Longqing Dynasty, and now shark products are still a rarity.

According to historical records, it was only during the Ming Dynasty that people noticed shark fins (also known as shark fins) and tried to process them into delicious delicacies. It was not until the Qing Dynasty that shark fin became popular and became one of the "Eight Treasures of the Sea". And because of the rarity, it is ranked very high.

That is to say, at present, because of the sea ban on the Ming Dynasty, there are few sharks, not only shark skin is scarce, but also the value of shark fin has not been fully explored.

Therefore, Ma Lin plans to send people to call at the ports of Quanzhou, Ningbo, and Fuzhou, the three major countries of Beihai, to open restaurants, and focus on shark fin as a signature dish. Make a name for yourself first, and then seek to make shark fin a tribute......

Wait until the shark fin is forced to come up, and then vigorously promote it...... When the time comes, you won't have to worry about selling shark fin at a high price in Daming......

As for the bear's paws, which are abundant in North America...... This thing doesn't need to be promoted, because Mencius and his old man in the Warring States Period of ancient China have long had a saying that "fish and bear's paws can't have both". Therefore, bear paws can be sold directly in Daming. However, now in North America, research is underway on how to preserve the bear's paw and preserve its flavor. After all, it takes at least half a year to transport the bear's paw to Daming, and it has to pass through the hot areas of the tropical sea, so it must be properly stored to avoid the bear's paw from spoiling or losing its flavor. Once you have a proper preservation method, it is time to start dumping bear's paws into the Ming Dynasty. When the time comes, as long as you send someone into the jungle with powerful powers and steel ball bullets, you won't be able to beat the bear! Even, hunting dogs can be trained to track the smell, find the hiding place of the bear when it hibernates, take advantage of its hibernation, and directly capture the ......

At this moment, a gloomy wind blew in the North American jungle. Many hibernating bears suddenly feel a chill in their paws...... Fortunately, they were all hibernating, and they didn't notice anything wrong......

……

Selling shark fin and bear's paws hasn't officially started yet. As Marin's spokesman in the Far East, Kong Tai, the governor of Dongfan Island, has sent experts in the construction of forts to the Humen area of the mouth of Guangzhou to guide the Ming Dynasty to build the first fort as a means of guarding against the invasion of Portuguese warships......

In fact, at the moment there are already fortresses in Europe dedicated to the placement of artillery. However, the battery built specifically for artillery has not yet officially appeared. Mainly because - now there are no heavy artillery in the countries......

The fort was set up specifically for the placement of heavy artillery, and in this era, only the Beihai Kingdom of Marin had a large number of heavy artillery, and there was a basis for repairing the fort. And in Europe, the current mainstream of naval artillery is only the appearance of 12-pounder guns. Even, the 12-pounder gun was still the main gun of the battleship, which was relatively rare. At this time, the most mainstream artillery on the Portuguese battleships was actually the Furlong cannon, that is, the rear-loading small cannon of the two- or three-pounder level. And the Ming Dynasty also learned the technology stolen from the Portuguese warships and learned to cast the Furlong cannon......

In Europe, it was really popular to build forts to protect ports, and I am afraid that they could not be built one after another until heavy artillery such as the Hongyi cannon appeared and was promoted.

Then, in the 17th century, the Portuguese brought the technology of fort construction to Macao. On the Huaxia side, it was not until the Qing Dynasty, or even in the middle and late periods, that a number of forts such as Dagu Fort were set up in order to ensure the safety of the capital. Even, the famous Humen Fort was urgently expanded after Lin Zexu's "Humen Smoke" was mainly used to prevent the retaliation of the British. Later, these batteries really resisted the British warships, forcing the British warships to go north along the coast to find opportunities.

The Humen Fort is so famous, of course, Ma Lin has studied history. He found that the place where the Weiyuan Fort of Humen Fort was located was probably one of the narrowest sections of the Pearl River Estuary. By setting up a battery again, it would be easy to hold the mouth of the Pearl River and block the entry and exit of enemy ships.

Moreover, in the middle of the river facing Weiyuan Fort, there are two small islands, the upper and lower rungs, which divide the Pearl River estuary of about 4.6 kilometers into two.

Coincidentally, the 12-pounder Napoleon cannon cast by Marin Jin's casting method used granular gunpowder made of rice soup had an effective range of about 1,911 meters. Although the purity of gunpowder in the Ming Dynasty was insufficient, it also had an effective range of about 1800 meters.

With such a range, if they wanted to protect the Pearl River estuary, they set up a fort in the later Weiyuan Fort and Jiuwangmiao Village on the other side of the river......

Finally, the problem of the river width of 4.6 kilometers may be easy to miss if it were elsewhere and the enemy ships would have walked in the middle of the river. Because, in the middle of this section of the river are the upper runghead island and the lower rungside island.

If you want the ship not to run aground, you can't take the two small islands in the middle of the river. In this way, whether you avoid the upper and lower barrier islands to the west or the upper and lower barrier islands to the east, you will fall within the range of the 12-pounder gun.

Therefore, Marin Mixin instructed Kong Tai to send Hadover, a craftsman who was responsible for the construction of the Keelung Fort, to Guangzhou and instruct the Ming army to build a fort in the place of the Weiyuan Fort in later generations and in Jiuwangmiao Village across the river, and deploy 12-pounder Napoleonic guns, which were enough to attack and block the Portuguese warships mainly equipped with Furlong cannons.

At this time, Da Gama, who had just departed from the port of Malacca, did not know. In the future, he will face a complete blockade of the two major forts at the mouth of the Pearl River......