I will direct you to the lore summaries:

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Philippines

With the US territories in the Philippines being lost to nationalistic revolution the Congress saw a means to enforce continuing Chinese influence, and to stamp out the potential of growing conservatism. After Tibet in 1970 they approved for the deceleration of war on Japan for Taiwan and the Philippines for the restoration of order based on a large-scale plan by the Chinese military circles.

Several million soldiers of the NPC Liberation Army and Navy – NPCLA and NPCLN respectively – landed on the shores of Taiwan and defeated the Imperial army in short order. Following soon after NPCLA and NPCLN forces engaged nationalist rebels shortly after their deposition of the US military on the island of Luzon. The conflict in Luzon spanned on into 1971 and involved one engagement with the US Navy as they sought to reconquer the Philippines. However, the US were forced to back off of the war to deal with the growing First North American War.

Peace in the Philippines arrived later that year. Peace with Japan solidified Chinese rule over Taiwan when the war boiled in Japanese Korea, forcing the Japanese to recognize an independent government in northern Korea based in Pyongyang.

Through 1975-1976 they had begun assisting Luzon in the acquisition of Mindanao. The year-and-a-half war was a grueling guerillas conflict against religious fanatics and ultra-nationalists. Though economic isolation combined with the poor nature of the economic disposition of the island had largely destroyed any attempt at a centralized authority. The only formal power they warlords of the island had was in that of the Pope of Mindanao, who fancied himself the true Pope as opposed to the one in Rome.

As well as being Anti-Chinese the Mindanese were anti-Europe through the Pope and critical of the Europeans for their lack of rescue from China.

The Pope of Mindanao was eventually cornered and assassinated by Chinese agents on the French colonial island of Niku Hiva. The war in Mindanao ended shortly after as Luzonian and Chinese troops swarmed Davao.

Several million soldiers of the NPC Liberation Army and Navy – NPCLA and NPCLN respectively – landed on the shores of Taiwan and defeated the Imperial army in short order. Following soon after NPCLA and NPCLN forces engaged nationalist rebels shortly after their deposition of the US military on the island of Luzon. The conflict in Luzon spanned on into 1971 and involved one engagement with the US Navy as they sought to reconquer the Philippines. However, the US were forced to back off of the war to deal with the growing First North American War.

Peace in the Philippines arrived later that year. Peace with Japan solidified Chinese rule over Taiwan when the war boiled in Japanese Korea, forcing the Japanese to recognize an independent government in northern Korea based in Pyongyang.
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The Philippines are in the Chinese sphere as a member of the Comintern. Though there have been a few things that would make them bitter (particularly the assassination of the rebel leader and self-proclaimed Pope) the Philippines do largely rely on the Chinese for their defense in the region against Imperial Japan and to keep a policing effort in the rather ruinous southern island of Mindanao.