"Today, Admiral Ben will give you a general idea of what atmospheric circulation is." Liu Hong gradually recalled the geography textbook of that year, and said unashamedly.

Since he is a sailor, since he is the successor of the 12-year compulsory education in later generations, he naturally does not want his subordinates to be illiterate and rationally illiterate, and he will feel that it is a punishment from heaven when he encounters a storm.

Tossed by that storm, the Beiyang Naval Division had to repair at least a day and night, and he was not in a hurry to announce a specific battle plan.

As soon as the words atmospheric circulation came out, everyone paid attention to Liu Hongjiang, not because they had never heard of this word, but because the senior generals, including the three brothers of the Qi family, knew that the number of times their admirals went to sea could actually be counted on one hand.

Lord Admiral began to ruin people again, and Qi Yuanbi, the third elder of the Qi family, slandered in his heart.

"Atmospheric circulation is a kind of global, regular atmospheric movement, also called monsoon, for example, in Fujian, Jiangsu and Zhejiang coastal areas of my Ming Dynasty, the summer is mostly southerly, and in winter it becomes a northerly wind, do you know why?" Liu Hong gradually took the chopsticks and drew two circles on the map, and said with great interest.

He was sure that among these people, even Qi Yuangong, He Bin, and other people who are familiar with maritime affairs, they must not know the deep-seated scientific truth, and the reason why they know it is all because of two words, experience.

But experience is good, but it is difficult to pass on systematically, and it is not the crux of the slow development of mathematics, physics and chemistry in the Ming Dynasty.

"The difference in the thermal properties of the sea and land, which leads to the seasonal change of the sea and land pressure centers in winter and summer, is the main reason for the formation of monsoon circulation...... To put it simply, it is a problem of the temperature difference between the sea and the land, what? What is a temperature difference? Oh, it's a hot and a cold ......."

After talking for a while, Liu Hong gradually found that he was a good teacher, but the students below were not good students.

Without the guidance of universal natural science, how could these young generals, who were originally farmers and strong people, understand what atmospheric circulation, monsoon, and temperature difference are.

Even several captains, including Cui Geng, felt that any atmospheric circulation and any monsoon were useless, they just needed to know the results.

I can't teach this lesson.

It was the performance of Qi Yuangong and He Bin that made Liu Hong's eyes shine, Qi Yuangong is highly perceptive, He Bin is experienced, and he has been following the Dutch all year round to learn some relatively objective knowledge of the direction of the ocean wind, including what Liu Hongjian just said.

He Bin is a fool in the words of the short and tight teacher in later generations, what is a foolish person, simply put, his ability is mediocre, but he can fool, and he can also fool people.

A qualified delusion person never feels that he is a fool, and sometimes they can even deceive themselves, that is, they even believe that they are very bullish, including Columbus and Kang Wuwei who showed their faces in the history books, and Che Guevara who has become a meme.

What Liu Hongjian didn't know was that 14 years later, He Bin relied on this talent to make Comrade Xiao Zheng believe that Ryukyu was a treasure island rich in products and all kinds of crops.

However, when Xiao Zheng took the trouble to take it back from the Dutch, he found that there was nothing rich here, except for sugarcane and other crops that could not satisfy hunger, there was nothing at all, and a group of Gaoshan barbarians were eager to eat all the soldiers under Xiao Zheng's command alive.

Even during the year of the confrontation between the Zheng family sailors and the Netherlands, most of the sailor soldiers were starved to death in the process of planting sweet potatoes, rather than dying on the battlefield against the Dutch, which is a later story.

Liu Hong gradually made people put away the map, and his saliva was wasted, but he could only score thirty points for himself.

There is no way, it is the knowledge level of these subordinates that limits his play, Liu Hongjian comforted himself like this.

The battle plan for attacking the Ryukyus was once again put forward in the charter, and if you want to take the Ryukyus, you must first take the city of Puluominsha, and if you want to take this city, you must first enter the Taijiang River.

However, the Dutch must have been well aware of this, and this was the first problem for the Beiyang sailors.

"Lord Wang, as far as I know, there are only two channels from the open sea to the Taijiang River, the Dagang Channel and the Luermen.

The Dagang channel was tightly sealed by the Dutch, and the fortifications on both sides of the strait were so strong and the artillery was fierce that the warships could not attack it at all.

Although Luermen was not blocked, the channel was shallow and reefy, and the channel was tortuous, making it impossible for large warships to enter. He Bin knew Liu Hong's purpose for letting him participate in this meeting, so he took the lead in getting up and cautiously expressing his opinion.

The location of the city is like a strange urn city, which is close to the Taijiang Inland Sea, and there are many cliffs in the east and west that cannot be attacked at all, and due south is the inland sea, and several large forts are erected at the entrance of the inland sea, and there is another European-style Lingbao - Relansha City.

Easy to defend and difficult to attack, one man is the best interpretation of this terrain.

Several other generals did not give any advice because they were not familiar with the Ryukyu coast, and most of them suggested that they should act on the opportunity after arriving in the Ryukyus, and anyway, the Dutch in the Ryukyus did not have warships in their hands, so they could go around the island to find an opportunity.

Liu Hongjian also had a big headache about this, it was not easy for the Beiyang Naval Division to be trained, and he categorically refused to let the sailor soldiers smash the Dutch fort, which would be too costly.

But the deer ear gate ......

Liu Hong gradually frowned, and suddenly saw Qi Yuangong, the boss of the Qi family, looking at him with burning eyes.

……

On the first day of June, Ryukyu, fog, and the city was covered by the general public.

A group of Dutch soldiers were bored on duty above the walls of Promensha, and although there was no longer their fleet on the island, they had no fear of anyone being able to fight here.

On the other side of the Inland Sea, the castle of Geranza was the absolute barrier of the city of Promanza, and the builder of the castle, the first Dutch governor of the Ryukyus, Song Ke, once said that no country's fleet could break through the defense line of Geranza.

For more than 20 years, this has been the case, and the battleships have rarely been able to win against the battery, let alone the fact that the battery is garrisoned by the Dutch, who have the best naval strength in the world.

"Owen, have you heard, the fleet on the Batavian side is about to win. (Dutch)" A soldier leaned against the wall with a spear in his arms and charged the other in the group.

"No, no, Felix, you're not right, how can the fleet on the Batavia side compare with ours, they only have less than two hundred ships, less than half of ours, it's our Governor Ovat's fleet that is about to win." Owen reminded.

"You're absolutely right, I'm really sorry, it's me who expressed the problem, I heard that the leader of the Ming Dynasty named Yiguan Zheng has been beheaded by the Governor Jon of Batavia, it's a pity, this credit should have been given to the Governor of Ovat." Felix muttered.

"Be quiet, Lord Governor has been very temperamental during this time, if you let Lord Governor listen, there will be no food to eat at night." Owen glared at Felix.

"I don't know when our fleet will come back, I heard that the Beiyang Naval Division of the Ming Dynasty has set sail, I hope there will be no changes." Owen suddenly said worriedly.

"What are you worried about? Is the Ming fleet just formed?

Hahaha, I said Owen, the defense of the city of Geranza is impeccable, and no fleet can attack here under the nose of the city of Geranza......"

Before Felix finished speaking, his eyes suddenly looked at the city and he was stunned.

Under the fog, the view from the city wall was not wide, but Felix clearly saw the silhouette of a battleship not far from the city......

……