Otherworldly Castle Era

　　 At the beginning of April in the sixth year of Tianqi, the territories outside Shanhaiguan were busy clearing the refugees.

　　 Hundreds of thousands, nearly a million refugees have made the army of these lords busy. In order to complete the task as soon as possible, the army of the lords has completely abandoned sympathy and turned into a machine that only knows about killing.

　　As long as these troops see the refugees, the first thing they do is not to expel them, but to raise their weapons and rush up. After a scream of screams, the refugees become corpses.

　　 The army didn't even look at the blood on the ground. Under the leadership of the knight, the army regrouped and went to the next place again.

　　 But Xia Guo is busy developing itself in China. Army reorganization training, political system reform and adaptation, the naval fleet went north to explore waterways, and recruited people willing to go north to the Linhai Basin to build new homes...

　　 All of this is filled with a sense of fulfillment in the busyness. As long as after a period of adaptation, Xia Guo's development speed will surely reach a new level.

　　 Li Bao’s exploratory fleet headed northward at a speed of five knots. On the first day it sailed in familiar seas, and at other times it was completely in unfamiliar seas.

　　 Therefore, the fleet can only sail during the day and anchor at night to rest. Coupled with the high tension of the entire ship’s officers and soldiers during exploration, it can only sail for five to six hours a day.

　　 The ocean is not land, coupled with the fact that it is sailing near the sea, the worry of hitting the rocks, the awe of the ocean, and the confusion about the front, all of the fleet is tense.

　　 During the exploration process, it would be great if ocean currents could be found.

　　Ocean current refers to the relatively stable flow of ocean surface seawater in a certain direction on a large scale throughout the year.

　　 Ocean currents can be divided into warm currents and cold currents. If the water temperature of the ocean current is higher than the water temperature reaching the sea area, it is called a warm current; if the water temperature of the ocean current is lower than the water temperature reaching the sea area, it is called a cold current. However, when warm and cold currents meet, sea fog is often formed, which is detrimental to sea navigation.

　　 Sea boat sailing along the ocean current can save time and speed up. In other words, ocean currents are natural "highways" on the ocean, or the kind with their own accelerating belts.

　　According to previous world experience, generally ocean currents flowing from low latitudes to high latitudes are warm currents, and ocean currents flowing from high latitudes to low latitudes are cold currents. Except for the north and south poles and the equator, cold currents are generally in the offshore, and warm currents are generally in the open sea (not ocean).

　　 Therefore, during the exploration process of Li Bao’s fleet, it is necessary to find the warm current to the north and the cold current to the south, so that Xia’s ships can save time when sailing at sea in the future.

　　 Fortunately, with the experience and data of previous explorations in the East Sea, Li Bao quickly found the cold current flowing from the north to the south, and then after passing through a large fog area, he discovered the warm current flowing north.

　　As long as they sail along the warm current, the speed of the fleet will increase. This time Yang Song gave Li Bao the task of exploring the channel, not finding out the entire sea area.

　　 Therefore, Li Bao directly sailed northward along the northward ocean current.

　　 But he also wanted to explore the sea conditions on the channel, and he couldn't sail all the time, so when Li Bao arrived outside the Linhai Basin, eight or nine days had passed.

　　 In fact, in addition to the influence of ocean currents on navigation, another one that has a great influence on navigation is the monsoon.

　　 The monsoon has a great impact on sailing warships and sea ships. Even the Xia Guo ships with spinnakers will always have faster winds than headwinds.

　　 The monsoon in the sea east of Xia Country is divided into summer monsoon and winter monsoon based on the summary of many years.

　　 The summer monsoon is a southeast wind, which is conducive to the northward movement of ships; the winter wind is a northwest wind, which is conducive to the southward movement of ships.

　　 It is the transition of March and April, and the summer monsoon has not come yet, so the monsoon has little effect on the navigation of the exploratory fleet.

　　 This time he set sail to explore the waterway, but Li Bao made enough preparations. Every time he returned to the Apocalypse City, he would go to the Tao Library to search for information.

　　 Now he has a wealth of nautical theory knowledge. After argumentation along the way, as long as he comes back and forth a few times, this channel can be fixed.

　　 On the tenth day, the fleet left the ocean current, sailed westward, along the coastline, and found the entrance of a river.

　　According to the data, this river is the Guihai River in the Linhai Basin, that is, the river where the city pool in the Big Territory was located in the small territory northeast of Bill Territory.

　　 This big lord is the lord who surrendered first in the war that took back the caravan.

　　 Since Xia Kingdom occupied the entire basin south of the Linhai Mountains, it has given a new name to each place, and this river has been named "Guihai River".

　　 When Big City faced the river, Di Qing and Lu Su had thought that it would be easier if there was a fleet in the siege.

　　 Although Big City has been abandoned, it has become the planned East Fort Town. In the hands of Xia Guo, this place will definitely become more prosperous in the future.

　　 When Li Baohang entered the Haihe River and went upstream, he came to this place in less than half a day.

　　Looking at the ruined, unpopulated city, Li Bao ordered with emotion: "Stop the boat, go down and rest for one night, add fresh water, and continue sailing north tomorrow morning."

　　 For ten consecutive days of sea voyage, the entire ship needs to go ashore to rest and relax the tension in preparation for the next sea voyage.

　　 On the eleventh day, the fleet consisting of three frigates and two sea-going ships once again explored the north.

　　 On the evening of the thirteenth day, the fleet arrived off the coast of Mike's territory, and at noon on the fourteenth day, it reached a small sea-side town.

　　Similarly, this small seaside town has been abandoned and destroyed. Li Bao stopped the ship again and made a mark. After another day of rest, he issued the order to return on the morning of the sixteenth day.

When 　　 returned to the voyage, Li Bao chose the southward currents in the offshore waters. After a cautious voyage, it took twelve days for Li Bao to successfully lead the fleet back to Naval Town.

　　 When Li Bao arrived in Haijun Town, it was mid-April of the sixth year of the Apocalypse.

　　 It took a total of 28 days and nearly a month of sailing. This is also the first time that Li Bao has led a fleet to sea for such a long time.

　　 If it weren’t for two shipping ships to supply the fleet, the three frigates alone would not have stayed at sea for such a long time.

"My lord, the minister only needs to come and go twice to figure out the sea conditions on the route, and this channel can be used." After Li Bao returned to the voyage, he hurried back to Apocalypse City as soon as possible and reported this time to Yang Song. The sailing situation.

　　 Yang Song smiled and praised: "You are doing a good job, Li Bao, as long as you determine the route, your achievements will not be forgotten~www.novelmtl.com~ The reward that should be given to you will not be less."

　　 "Come on, thank you Jun, this is what the minister should do. I dare not ask for credit." Li Bao replied, bending his fist.

　　Yang Song laughed and said, "If you have merit, you will be rewarded, if you have done it, you will be punished, and you still know it."

　　 "By the way, Li Bao, how long is this channel?" Yang Song asked afterwards.

Li Bao replied respectfully: "Prince Qizhen! In terms of ministers, starting from Haijun Town and arriving at Dongpu Town, the total is about 650 kilometers, and to the seaside town farther north, there are 700 kilometers. About eighty kilometers."

　　 "Thanks for your hard work, go back and rest for a few days, and you will be busy next time." Yang Song encouraged.

　　 Li Bao bowed his fists and saluted again: "Yes, go to Xie Jun, the minister retires!"

　　The task that Yang Song gave to Li Bao was only to explore the small town near the sea.

　　 As for crossing the waters farther north of the Linhai Mountains, Yang Song and Li Jing decided that it was not appropriate to stun them, so they did not let Li Bao go to explore.

　　 Nowadays, Xia’s powerful army makes the forces outside the customs restless. If these forces know that Xia still has such a powerful fleet, it will probably have a counterproductive effect on delaying the enemy’s plan.

　　 If the navy is really needed in the future, the unexpected fleet will be the best blow to the enemy!

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