Is Philippine not a US puppet in your opinion? Do they have to give the US four more military bases for you to change your opinion?Not now ... there is a very little benefit to China's geopolitics currently
China now should concentrate to the big bully + the puppets ... the last thing China need is adding new "enemy" (i.e India, Philippine, etc)
Perhaps support it discreetly, but not openly and use it as one of the cards against those countries that maybe useful in the future
China is holding out on India as usual, only time can tell if it was a good idea. Holding out on Saudi turned out to be really good, but there's no obvious way to know India would work in the same way.
Aside from India's border claims with China, India still promotes separatism within China by supporting the Dalai Lama and his CIA compradors. This is not something which is used by the ruling party for electoral votes (unlike the nationalist issues with border claims), nor is this an issue which can be changed by a different ruling party. This issue shows that Indian elites harbor long-term ill intent towards China regardless of geopolitical conditions.
From China's MoFA many recent speeches/publications, it seems like the 以直报怨，以德报德 motto is being introduced more and more.
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Perhaps the era of not interfering in other countries even when they continuously meddle with China's internal affairs is over.
Another aspect I want to emphasize is that China has multiple tools in this area, many operations can be done by the International Liaison Department of the CPC, instead of its state counterpart the MoFA. It seems like the International Liaison Department has been revitalized after the 20th Party Congress. This is useful because CPC aiding international ML/M/Maoist/Socialist parties is technically not the same as PRC aiding independence groups.