Yu Zhu dictated that Xia Dagen's half-year work report on Liuqiu Company was on the road for a month, and it was only sent to Chongqing Mansion in late May. The letter was also written in cipher and was brought back by a caravan set up in Lin'an. With the retreat of the main force of the Mongol army to the north and the situation of the two khans standing side by side, Kublai Khan, who passed through the Han region, had no time to move south, so the fighting between the Song and Mongolian armies was greatly reduced. At present, it is unimpeded from Chongqing Mansion down the river to Lin'an. However, the operation of the Perak army caravan was focused on the Yibo region and Banzhou, and even Luzhou, Chongqing, Jiading and other places were limited to prefectures and counties along the river. Lin'an and other coastal areas are far away, and there are many bandits and checkpoints along the way, which are not suitable for large-scale business. Therefore, only small-scale caravans are regularly sent to Lin'an, in addition to selling high-value goods such as glass wine utensils and tableware, more of them are in contact with the Liuqiu company.

The work report of the Liuqiu Company was written in late April 1260, the first year of Jingding, that is, in Ouyang Xuan's mouth. Yu Zhu said in the report that the company had recruited more than 60,000 people to the island, one-third of whom were displaced from the prefectures and counties south of the Yangtze River, two-thirds from the Mongol-occupied Han region in the north, and even a small number of Goryeo and Wa. To say that such a large population migration involves a huge amount of work such as organization, boarding, food and lodging, and no matter how well Ren Secrecy is done, it is impossible not to be without trouble. In fact, the transfer of the population to Liuqiu did alarm the local officials and even the defenders, but the reaction of the Southern Song officials and the Mongol officials was very different.

The magistrates of the Southern Song Dynasty were made uncomfortable by the displaced people in their jurisdiction, and they had to organize disaster relief in the year of famine, for fear that these poor people who could not survive would make trouble everywhere, rob rich landlords and even storm the yamen. If the rich are robbed or the poor rise up, it is a trivial matter to lose the official hat, and it is unknown if the head falls off. Most of those rich landlords are wealthy and powerful families, and there are many high-ranking officials and dignitaries behind them, and they are not easy to get along with at all. In the year of famine, the poor sold their children and daughters, but the rich bought land at a low price, and the anointed land in the south of the Yangtze River gradually gathered in their hands. "Persuading people to pay money, such as cutting meat with a pure knife", the magistrate asked them to take out grain for disaster relief, that is, they cried poor, and when they were in a hurry, they said that they would go to Lin'an to complain about their harsh government. Nowadays, some people want to take the initiative to recruit these poor ghosts and plague gods, and also give "hardship fees" according to the head, which is really a great thing. When asked by the boss about the whereabouts of these displaced people, he could say that they went to the western part of Sichuan to reclaim the land, or that the grass fell into the mountains and forests and were exterminated by themselves.

In the northern Han land occupied by the Mongols, officials tried to prevent the escape of the displaced people, and violators were executed. The Mongol nobles and the marquis of the Han army strictly ordered that no one should be let go, and the grassroots officials who fled many people under their rule would be severely punished or even executed. However, the Han people have suffered from double oppression, and the people have long been struggling to make a living, and the year when the wind and rain are good is good, and they can survive by eating chaff and vegetables, and in case of disasters and famines, they can only eat tree bark, Guanyin soil, and even Yizi and eat. Although you will be executed if you are caught if you escape, if you don't escape, you will die of starvation, so it is better to go to the legendary paradise on earth to fight for a way out.

Seeing that the people under his rule fled with their families but were powerless to stop it, those grassroots officials in the north thought of the next cruel punishment, and simply joined the ranks of the fleeing. It is said that the Han Shihou was originally a strong man who believed in force, and although he was an official under him, he could be fed and clothed, but it was common for him to be whipped and abused. Most of those bosses are rude military men, or robbers and bandits who have been recruited. As for those Mongolian nobles, they are the emperors of this land, and the low-level officials and their families are also slaves in their eyes, beating and scolding at every turn, and cutting down with knives if they resist at the slightest resistance.

Of course, the Mongol army and the Han prince would not sit idly by and watch the escape. They sent men to monitor the villages and communication arteries, and on the other hand, they sent troops to attack the ships that came to meet them. However, it is easy to prevent a while, but it is difficult to prevent a while, and there are still many refugees who flee to the beach by remote paths. As for sending troops to attack the ships that responded, it was even more futile. In the thousands of miles of coastline with countless rivers and harbors, the ships that received them were erratic and did not dock, but sent small boats to carry people on board and sail out to the open sea at the slightest disturbance. The Mongol army did not have a naval army, so the Han army was ordered to clear the coast. Li Pu and other Han marquis' sailors, who attacked according to the order, not only did not pursue those ships, but were defeated by the cruising Song army, and after losing dozens of warships, they had to honestly retreat in the military port and did not dare to go to sea.

It is not an exaggeration to call the Mongols weaker at sea than the Song army. At present, although the Song army is losing and retreating on land, and it is even more defeated in the field, it can beat the Mongolian army at sea. The so-called "southern ships and northern horses", the northerners are not good at water warfare, and the total number of ships of the Han army such as Li Pu is only a few hundred, and most of them are small boats, and the ships play more of a transportation role. On the other hand, the Song army's coastal navy had thousands of ships, including many warships and sea ships. In addition to equipment, the Song sailors were also superior in combat experience and navigation skills, and could easily crush the Mongolian water power.

Long before Yu Zhu's arrival, Li Kaipeng had made contact with the Navy under the Coastal Control Department through the high-ranking officials of the Privy Council of the DPRK Central Committee to help transport refugees from the north to Zhoushan. These naval generals already had the duty to fight against the Mongols, and now they have taken the silver of the Thunderbolt army, which can be described as "holding the grass and beating the rabbit", where will they be unwilling? After going back and forth, the two sides became acquainted. After the occupation of Keelung, the recruited homeless people will be transported directly to Liuqiu, and the Liuqiu Company's own ships will be used for secrecy. However, the sea transportation of Han people recruited from the Mongol occupation area was still escorted by the Song army and naval forces on the northern coast. Of course, this kind of escort protection naturally has to pay a lot of money to the officials of the coastal control department and the generals of the navy.

Liao Loach was very greedy for the big ships of the official army, and also suffered from the lack of experienced sailors. At present, whether it is ocean exploration or naval construction, there is an urgent need for this big ship and sailors. Although the ten sea ships used in the Battle of Keelung were large enough, they were converted from merchant ships, and there was still a big gap between them and the warships in terms of speed and handling. However, the cycle of building new warships is very long, and it is impossible to build them in less than a year and a half, and this is still based on the premise that Li Kaipeng hired shipbuilders in advance and purchased shipbuilding tools and a large amount of wood. Although there is a lot of wood on the island, not all of it can be used for shipbuilding, and even good wood needs to be dried in the shade and insect control before it can be used for shipbuilding.

The soldiers of the naval camp brought by Yu Zhu were not familiar with ocean voyages, and they were also novices in naval warfare, although in time they would become qualified naval soldiers, but it would be at least a year later. Fortunately, many of the displaced people recruited by Li Kaipeng in the early stage were fishermen and pirates who had been begging for a living at sea, and it was they who operated the boat to successfully sail to Keelung. After the occupation of Keelung, Liao Loach selected 200 pirates for minor crimes from the captured pirates to serve as sailors, and selected several hundred sailors from the newly recruited homeless people, so as to ensure normal training, escort and combat missions.