The Bohai Sea was called Beihai in ancient times, also called Shaohai, because it was surrounded by Liaodong Peninsula and Shandong Peninsula, so the area of Bohai Sea is not very large, and it can even be said that it is only a relatively large bay, and the position of Shandong Peninsula and Liaodong Peninsula tip opposite, is a chain of islands, the ancients were able to take a boat very early, along this island chain to and from the two peninsulas.

Datang's navigation technology has been very developed, can build hundreds of steps long ship, and with the arrival of Li Xiu, especially Qi Niang's painstaking study of shipbuilding, she will learn from Li Xiu from the knowledge used in shipbuilding, designed many larger, safer, faster sea ships, which also greatly promoted Datang's shipbuilding industry, after all, there are no patents in this era, other shipbuilding workshops see Qi Niang's ship is excellent, naturally they have imitated, it is no exaggeration to say, now Datang coastal running sea ships, Most of them are from Qi Niang's design.

With the development of maritime trade, Datang also began to pay attention to the construction of the navy, before Datang did not have a special navy, but unified called the navy, whether it is the river or the sea, the use of ships is not much different, and even sometimes the kind of tall building ship to the sea, the result of this kind of high center of gravity of the ship balance is very poor, a wave can make the ship roll over, for which there have been a lot of tragedies.

Later, at the suggestion of Li Xiu, the Tang Dynasty began to separate the navy, and the ships used were also the latest sea ships, and the first navy was located in Dengzhou, which was located on the Shandong Peninsula, in fact, the original purpose of the establishment of this navy was to be able to attack Goguryeo across the sea in the future, before Zhang Liang's army was escorted by this navy, from Dengzhou to Beisha City, and now there is an army under the escort of this navy to go to sea.

"Vomit~" Pei Xingjian held on to the side of the boat and made a burst of vomiting sound that made people feel sore, even if it was a good sea ship, it could not avoid the bumps during sailing, not to mention that today's wind and waves were still relatively big, Pei Xingjian and they were really going to sea for the first time, so not only could they not stand it, almost half of the soldiers on the ship couldn't stand it, and at this time, they were also pale when they vomited, and they couldn't wait to vomit out their stomachs.

I don't know how long I vomited, Pei Xingjian only felt that his stomach was empty, no matter how disgusting he was, he couldn't vomit anything, so he sat there by the side of the boat, gasping for breath, and finally gasped for a while, and then he wanted to struggle to stand up, but he felt that his brain was dizzy for a while, and his eyes were a little black, and he didn't even have the strength to stand up.

But at this moment, Pei Xingjian suddenly felt a strong big hand supporting him, and then helped him up, and then a familiar voice said with a smile: "Brother Pei, how do you feel, it will be much better if you spit it out, I have some hot water here, you will feel better if you drink it!" ”

Pei Xingjian reluctantly opened his eyes at this time, and when he saw the young general supporting him, he couldn't help but show a weak smile and said, "There is Brother Lao Liu, but we have trained before, why do you vomit so much?" ”

"Haha~, your little bit of training is just to familiarize you with life on the ship, and it can't be compared with actually going to sea at all, so it's okay not to adapt, let alone you, even General Su is vomiting in the cabin now." I saw that the young general surnamed Liu couldn't help laughing, and by the way, he also made fun of Su Dingfang, who commanded this army.

This general surnamed Liu is named Liu Renyuan, and there is only one word difference between him and Liu Renliang, but the two are just similar in name and have no kinship, but in the original history, Liu Renyuan used to be Liu Renliang's top boss, and the official worshiped the position of protecting the capital, and there were some grievances between the two, but now Liu Renyuan is just a young general in the navy and is not too famous.

"I thought that you navy must be very easy to travel by boat, but I didn't expect the sea to be so bumpy, and now I feel like my whole body is going to fall apart." Pei Xingjian couldn't help but smile bitterly at this time, and then took the water bag in Liu Renyuan's hand and drank a few sips, and with the hot water, he really felt that his numb stomach felt better.

Liu Renyuan is also an official eunuch, once studied in the Hongwen Pavilion, and later served as Li Shimin's personal guard, because once Li Shimin encountered a fierce beast when traveling, Liu Renliang in order to protect Li Shimin, he actually fought with the beast with his bare hands, which also made Li Shimin very appreciative, so he was transferred to the military academy to study, and after graduation was transferred to the navy, because the navy was newly built, and not as valued as the army, so Liu Renyuan's official position is also very high, he has already served as a lieutenant at a young age, and he can usually lead a fleet independently.

"Haha~, how can there be any easy errand in the army, although today's wind and waves are a little bigger, but you have not encountered a storm at sea, that kind of wind can almost overturn the entire ship, and we sometimes go out to sea for more than a month, and the water stored on the ship stinks, but you have to drink it." Liu Renyuan was very bold, and he laughed out loud at the moment.

Before Su Dingfang received an order, led his army to Dengzhou, to prepare for the future sea crossing operations, Pei Xingjian was also acquainted with Liu Renyuan at that time, the two were like-minded, so they also became friends, yesterday they finally received Li Shimin's order, let them cross the sea and go straight to Pyongyang, it just so happened that Liu Renyuan was also in the fleet escorting them, and it was also fate.

Hearing Liu Renyuan's words, Pei Xingjian couldn't help but feel a little ashamed, speaking of which the Tang Dynasty's army did have some contempt for the navy, first, the Central Plains has always been dominated by the army, so the navy was not very valued before, and secondly, the navy has just been established, and there is no record at all, so it is inevitable to be despised, even Pei Xingjian used to think that the navy was very easy, but it was not until today that he found that the navy was probably more bitter than the army.

"Brother Liu, according to your estimates, how long will it take for us to reach the coast near Pyongyang?" Pei Xingjian, with the support of Liu Renyuan, found a wooden barrel on the deck and sat down, and then said again, they had waited for so long in Dengzhou, and finally waited for the order to rush to Pyongyang, but now the turbulence on the sea is too uncomfortable, and he can't wait to return to land immediately.

"Originally, at the usual speed, you could arrive at Pyongyang City in two days, but now the wind and waves are too strong, and you have to take care of you, after all, with your current situation, even if you get to land, it is still a group of soft-footed shrimp, so the fleet has also slowed down, it is estimated that it will be two days late, and then you can rest and recuperate, and you should be able to land!" Liu Renyuan replied immediately, and when he said this, he couldn't help but turn his head to look in the direction of Pyongyang City.