On October 13, the 11th year of Chongzhen, the first group of Japanese troops on the Ming merchant ships arrived on Luzon Island, and two of the wings landed in the port of Cagayan and controlled the access to the Cagayan Valley. Compared to the Central Plains at this time, the Cagayan Valley is somewhat calm.

After all, far from Manila and separated by mountains and the central plains, Manila's influence is the weakest. Although some of the local natives converted to Catholicism, because of the urbanization campaign carried out by the Spaniards, high taxes were levied on the natives, which led to extremely acute contradictions between the two sides.

In 1605, the Spanish rebelled in Tuguegarao, founded in the middle of the Cagayan River, killing the Spanish colonists in the city. Thus, when the Spaniards induced the Chinese and Japanese immigrants to attack the natives through missionaries, there was no unanimity among the indigenous tribes.

Coupled with the fact that the rainy season has a much greater impact on the mountains than on the plains, mudslides and flash floods can occur after heavy rains, this terrain leads to the rainy season and is suitable for war. Moreover, the special terrain of the Cagayan Valley made it difficult for the natives to attack the Chinese manors by guarding a major transportation route, so even if some tribes wanted to respond to the call of the Spaniards, they tried to delay the attack until after October.

And among the indigenous tribes, it was not the ones who did not have good relations with the Four Seas Trading Company, and some of them reported the news to the representatives of the companies in the Cagayan Valley. The representative of the Sihai Trading Company, Lin Qiming, immediately recruited Chinese and Japanese to form a militia group, strengthened the defense of several communication arteries, and evacuated some people from farms that were too remote.

In addition, through the tribes close to the company, at the tribal alliance meeting to discuss the rebellion, the tribes who supported the rebellion were co-opted and disintegrated, so that the indigenous tribes in the Cagayan Valley have not been able to launch any decent attacks.

When the two Japanese wings landed in Cagayan Harbor, Lin Qiming quickly contacted the commander of the Japanese unit. Twelve days later, the company militia allotted the Japanese army to capture Tuguegarao, disarm the Spaniards in the city, and bring the Cagayan Valley under the company's control.

On November 4, Lin Qiming commanded the Japanese army to attack several pro-Spanish indigenous tribes, forcing the tribal alliance of the Cagayan Valley to negotiate with the company. From 18 November to 22 November, the two sides negotiated a peace agreement in Mount Kalvari.

The agreement stipulates that the corporations and tribal unions are bounded by the Iragan region in the upper reaches of the Cagayan River, and that the areas below Ilagan are subject to company law and above are subject to tribal customary law. If someone crosses the border and attacks the other party's personnel, then it should be brought to trial by a tribunal composed of both parties.

In addition, the alliance secured the company's caravansera's access to the mountains for trade and mining, in exchange for the company's abolition of the religious and poll taxes imposed by the Spaniards on the various natives.

After the agreement was signed, Lin Qiming returned the captured natives, and the tribes hostile to the company had to leave their homes and move to the upper reaches of the Cagayan River or to the harsher mountains of the mountains.

The Iragán region was once the furthest point reached by the Spanish forces, and it was also the confluence of a large tributary of the upper Cagayan River. There is hardly a population here, and it is an area densely populated with forests and swamps.

Lin Qiming decided to establish a town in this area to trade with the natives upstream, and to monitor the movements of the natives upstream, and he named the town, which was still on the map, Hanyang. As for Tuguegarao, the center of the original Cagayan Valley, it was also changed to Qiming City. Spanish and indigenous names in the region are rapidly being replaced with Chinese names.

Just as calm was returning to the Cagayan Valley, fighting began to rage in the central plains of Luzon. On 20 October, after the reinforcements of the four wings landed at the port of Lingayen, the militia of the Four Seas Trading Company and the Japanese troops who were in a defensive state were immediately demoralized.

Sanada Yukimasa and Mori Katsuie quickly took command of the reinforcements, and after consultation with representatives of the Shikai Trading Company, they decided to cross the Agno River and attack directly at the Tara tribe in the Tarak River valley in the southern part of the Central Plains, an important stronghold of the rebels in Pampanga.

Located in the southern part of the Central Plains to the north of Manila, it is the most developed area of the Central Plains, and of course this achievement should be attributed to the local Pampanga people.

The Tarak River and the Pampanga River, two rivers to the west and east, originating in the eastern foothills of the western coastal mountain range and the western foothills of the Caravaho Mountains in the south-central region, are important sources of water for the people of Pampanga to grow rice.

When the Spaniards occupied Manila and the Inner Lake Plain, many natives moved to this area, which accelerated the development of this area.

Although the land lease agreement signed between the Four Seas Trading Company and the Governor of Manila, Siwala, encompassed the entire Central Plains, the land rights in the southern region were complex, and there were not only native lands but also many Spanish estates, so the Four Seas Trading Company focused on the northern part of the Central Plains, that is, the area north of the Agno River.

It was also because of the absorption of the indigenous tribes expelled from Manila and the Neihu region by the Spanish colonizers that the Pampanga people in the southern part of the Central Plains also became a powerful tribal alliance on Luzon.

However, unlike the tribes in the mountainous northeast who resisted the Spanish colonization, the people of Pampanga have always maintained a friendly and cooperative attitude towards the Spanish colonizers in Manila.

For in the eyes of some of the Pampanga tribal chiefs, the Spaniards brought them the population, the seaside tribes expelled by the Spaniards. He also brought them tobacco, corn, and sweet potatoes, so that they could survive the year of famine. This, combined with the preaching of the Catholic clergy, made many of the Pampangans more willing to get closer to the Spaniards.

Of course, this is also because the Spaniards occupy too many colonies, and they are not interested in the development of the colonies, and only want to find gold and silver deposits, so that the contradictions between the two sides have not erupted.

However, when the Four Seas Trading Company entered Luzon, the scale of the company's exploitation of the Central Plains made the people of Pampanga feel threatened to their survival. In particular, the tribes living on both sides of the Agno River are increasingly engaged in numerous minor conflicts over land issues and companies.

That's why, when the Spaniards incited them against the Four Seas Trading Company, the Pampangans jumped out so aggressively. The people of Pampanga have a population of about 70,000 or 80,000, most of whom are concentrated near the Tarak and Pampanga rivers.

Among them, the most populous places are at the Kawannadi end of the central Pampanga River and the Tara area in the Tarak River basin. The former has about 10,000 people, while the latter has a population of 6 or 7,000.

These two areas were also the two military centers of the Pampanga uprising. The capture of the Tara region would allow the Tarak River basin to be pacified, linking the northern part of the Central Plains with Manila Bay, thus cutting off Manila and the Inner Lakes region from assisting the Pampanga.

After discussion, Sanada Yukimasa, Mori Katsuie, and others decided that Sanada Yukimasa would lead four wings of Japanese troops south along the Tarak River and attack the Tara area. Prior to this, the Mori Katsuya led a wing of Japanese troops and the 2nd Battalion of the militia to march across the Agno River to the southern end of the Central Plains at the end of Kavan, in order to attract the Pampanga people to block it.

Although the upper reaches of the Tarak River were not allowed to be navigated, the rainy season that had just ended brought a large amount of water to the river, allowing the Japanese army to use rafts to carry the baggage of the troops, which greatly saved the physical strength of Sanada's army. This allowed them to arrive in the Tara area earlier than expected.

The weather in Luzon in late October was clear, which was ideal for field marching and shooting with weapons. And Sanada Yukimasa also managed to bring two four-pound cannons, which made the town of Tara, which only had a circle of wooden walls, quickly give up resistance.

The Pampanga people, after all, were only a loose tribal confederation, and they did not have a unified and strong leadership both militarily and organizationally. Therefore, after hearing of the fall of the town of Tara, the village of Pampanga in the lower reaches of the Tarak River immediately chose to surrender.

By November 14, the Pampanga tribes in the Tarak Valley had withdrawn from the uprising. For their part, the Maori Katsukata also set up an ambush in the Baron'o area south of the Agno River and routed 3,000 Pampanga rebels and gained control of the vicinity of the Agno River.

As a result, the Pampanga were left with only a controlled area centered on the Kavan end. The population of this area is less than 30,000, and the number of troops is less than 6,000. Seeing that the situation of the war had taken a sharp turn, those central mountain tribes and southern tribes who had come to help in the war began to quietly lead their troops away, which made the power of the Pampanga rebels weaker and weaker.

As for the Manila side, Coqueira has been negotiating with Zheng Zhilong on the issue of the anchorage of the Ming fleet, no matter how many means he used, the other party is still unmoved, and the Ming fleet anchored in Manila Bay is still growing, and by October there were as many as eight ships.

At one point, Coquela wanted to cut off the fleet's supply by force, but after Zheng Zhilong mistakenly fired several shells at the Manila battery, the Spanish soldiers in Manila refused the order to blockade the port.

It was precisely because of the oppression of Manila by the Ming fleet that it was difficult for Coqueira to allocate his forces to aid the rebels in Pampanga, so he could only send people to protest again and again to Guo Qing, the representative of the Four Seas Trading Company.

The company representative had been amicable in accepting the protests, and claimed to report to the board of directors in Beijing, who would send a letter to the Japanese shogunate in Osaka asking about the purpose of the Japanese army's presence in Luzon.

But on November 18, the second group of Japanese troops landed in Manila Bay. After cutting off Manila's access to the Central Plains, Coqueira finally realized that the rebellion should be over, otherwise Luzon north of Manila would not be under the control of the kingdom.

He had to get the pro-Chinese members of parliament to come forward and invite Guo Qing, who was hiding in Baguio, to come to Manila to negotiate the end of the war and try to restore the situation to before the war.