The Governorate of Bo Ni is now located in the northern part of Borneo, which is the coastal plain of what was later Malaysia's territory on the island.

There are many aborigines living here who speak different languages, and each ethnic group is divided into more branches due to the different regions and customs in which they live.

For example, the largest number of indigenous ethnic groups, living in the inland plains and the west coast and northern Borneo, the Gyada Shan Dushun people live by growing rice. The other major indigenous people, the Ba Yao people, are divided into two groups due to their different living areas, one of which lives on the west coast and most of them depend on farming for their livelihood, and a small number rely on fishing, and the other group lives on the east coast of Borneo and is a hard fisherman who begs for the sea all his life.

The Dushun and Bayao tribes of Jiadashan rely on cultivation for their livelihood, and their nature is not strong, their military value is very low, and they have not established a state, which is a typical form of clan tribe.

After conquering the Bo Ni Kingdom, Wei Chi Xunyu was able to conquer the two tribes in the northern coastal plains of Borneo in just half a year, build cities and garrisons on their territory, control the place, levy taxes in kind, and forcibly levy labor and military service.

However, Borneo is not only the two indigenous peoples who are relatively gentle due to their agricultural lifestyle, but also the two most feared Mauru and Dayak people, who are widely distributed along the coast and inland of Borneo and have the custom of hunter-head.

Most of the Maolu people live in the remote inland mountainous areas north of Binkai City, the residence of the Bo Ni Governor's Office, and in the area of the two cities of Jianning and Shaming (Sabah in the northeast of Borneo), and mainly live by hunting and farming.

The Dayak people are divided into coastal Dayak and terrestrial Dayak according to their living area, and most of the land-based Dayaks live along the banks of larger rivers, concentrated in the central and western parts of Borneo, and live by gathering, fishing and hunting.

The two tribes hunt the heads of strangers and enemies in their traditional funerals to display as personal and tribal glory.

When the Tang army entered Borneo and began to conquer the north and west, no matter what ethnic group was among the conquests of Wei Chi Xunyu, an armed conflict between the two sides was inevitable.

The Tang army, relying on its elite armor and advanced tactics, repeatedly defeated the Dayaks living in the coastal area, killing nearly 10,000 people. Subsequently, the Tang army attacked the land-based Dayaks on the pretext that they did not pay taxes in kind, and successively eliminated more than 20 land-based Dayak tribes in the area of Sarawak, Malaysia, and killed more than 20,000 people.

The remnants of the Dayaks have taken refuge in jungles, rivers, coastal swamps, mangroves, or southward into dense mountain forests. From time to time, the Tang army came out to sneak attack and hunt the heads of the Tang soldiers who went out of the city to patrol, and when the Tang army brigade came, they had already fled.

The garrisons of the entire Boni Prefecture were panicked, and at least twenty people accompanied each time they went out of the city.

After the immigrants arrived, they reclaimed the wasteland allocated by the Governor's Mansion outside the city, and there was a case of two families of immigrants who shocked the Governor's Mansion and were attacked and killed by the Dayaks, cutting off the heads of two families and thirteen people.

Wei Chi Xunyu was furious, and ordered the garrisons of each city to sweep the Dayak people within a hundred miles around the city, which lasted two months, killing more than 1,000 Dayaks, but it was still a symptom but not a cure. In the end, the garrisons of the cities had to be ordered to send large groups of men and horses to guard the surroundings when the people were reclaimed, so as to prevent the Dayaks from attacking.

At the same time, all the young and strong men in the people were armed, and they were issued with horizontal swords, bows and arrows, and they were trained by the officers to protect themselves during the slack time, and finally even the young and strong women were issued with horizontal knives.

As a result, the fierce folk customs of the Chinese on the island of Borneo were brewed, and it became an important source of recruitment for the Tang Dynasty in the future.

The situation in the northeastern part of the prefecture was also not optimistic, and the city of Jianning, which was nearly a hundred miles away from the coast, was built into the valley where the Maolu people lived. The Maolu people mainly farmed, and the grain output was very low, so they had to be supplemented by fishing and hunting. At this time, the Tang army entered and robbed them of the fertile valley where they could swim and cultivate, and conflict was inevitable. Unable to win the battle on the frontal battlefield, Mao Lu people hid in the mountains, and when they saw the opportunity, they went out of the mountains to sneak attack, hunted the heads of the Tang army, and made the Jianning guards anxious, and asked for help from Binkai City three times and twice.

Although the Boni Prefecture was moved in by more than 15,000 people, and more than 4,000 united soldiers could be recruited from them, it was difficult to expand its territory because of the protection of the territory and the people, and the attack of the Daya and Maolu people.

Seeing that the other three governors in Nanyang were all expanding their territories after receiving a large number of immigrants, Wei Chi Xunyu felt how uncomfortable and uncomfortable he was. As a last resort, King Shangshuyan had to ask for an additional force of 3,000 soldiers and horses, and an additional 20,000 people would move in to Borneo in the coming year. In the song, he promised to conquer the entire western, southern, and eastern coastal plains of Borneo in the coming year, and open up the territory of six states for the imperial court. At the end, Wei Chi Xunyu did not forget to ask: "How to solve the Daya and Maolu people in the jungle of Borneo, please ask Your Highness for help." ”

"The Maolu people have never heard of it in later generations, but this Daya people are quite famous."

Thinking of the Daya people, Li Yu remembered a past incident in the later life, and his face was ruthless: "Speaking of which, the Daya people in Borneo have a deep blood feud with the Chinese in the later generations. In the 1965 Indonesian Massacre, he was the most ferocious painter of the Chinese Massacre in Borneo. The Dayak people placed red earthen bowls containing chicken or dog blood in front of the Chinese houses as a sign of revenge for the Dayats, and any Daya people who saw the red bowls had the responsibility to exterminate all the Chinese in the house. Later survivors reported that in West Kalimantan, where the Chinese in Borneo gathered, "the ditches and rivers turned red" because of the incident of "slaughtering villages" of the Chinese, and "the Dayas killed the Chinese like chickens and ducks". West Kalimantan became the only province where the Chinese were most persecuted, and their houses, property, and plantations were looted and destroyed. ”

Li Yu pondered that since he had traveled to the Tang Dynasty, where the soldiers were very sharp, the people were brave and actively pioneering and enterprising, he could not let this group of barbarians who slaughtered Hua in later generations continue to stay in the world, so as not to leave their descendants behind.

But it's not easy for this group of Dayats to hide in the rainforest, not to mention that Borneo is too big, the third largest island in the world, with an area of 740,000 square kilometers. Tang Junnuo, who is not familiar with the terrain and the climate and environment of the tropical rainforest, pursues deep into the rainforest, and faces the elusive Dayak people, all kinds of mosquitoes carrying tropical epidemic pathogens in their bodies, I am afraid that the Tang army that goes deep into the rainforest will not be able to lose eighty percent of it in a short time.

What's more, this group of Dayaks armed with poisoned arrows and iron spears took advantage of the complex and treacherous environment of the rainforest, and even the Japanese troops with modern weapons in later generations could not help them, so they could only be trapped in the coastal cities.

"We have to think of an easy way to deal with this group of jungle barbarians once and for all, without risking sending troops deep into the rainforest."

Li Yu walked around the study a few times, and the news of his previous life about the outbreak of a huge forest fire in Indonesia that caused the red-haired long arms living in Borneo to almost be wiped out suddenly came to his mind.

"By the way, although Southeast Asia has a tropical rainforest climate with high temperatures and rains all year round, it also has dry and wet seasons. In the dry season, it is difficult to get a single rain for several months, coupled with high temperatures, and then large-scale man-made felling of trees, which can be dried by the scorching sun in a few days, and many tree species in the tropical rainforest secrete flammable resins. At that time, the dry season, high temperature, dry firewood, resin, the four things are matched, and the people will set fire on a large scale, and a flame will be quickly ignited in the rainforest of Borneo, and the barbarians hiding in the rainforest will not become roast suckling pigs? ”

Li Yu was shocked that he thought of a desperate plan, although this move hurt the peace of the heavens, but for the sake of the safety of future generations, he did it.

Li Yu picked up the pen and wrote "Burning the Island" in the reply order to Wei Chi Xunyu, wrote down his own suggestions on how to implement it, and finally attached a sentence: "Cut the grass and eradicate the roots, and never suffer in the future!" ”

Li Yu not only sent people to Wei Chi Xunyu, but also ordered Yanshui, Luzon, Puluo and all the prefectures established in Nanyang in the future to be cleaned up according to this policy.