Honestly I am sure the NPA would not consider their blood to be the blood of China's comrades given the situation. Per Joma Sison

The Philippines was not originally covered by the Silk Road Economic Belt or the Maritime Silk Road of the BRI. This was used as a bait to the greedy and corrupt Duterte regime in exchange for its unwavering subservience to China’s dictates.

China’s gain in the country for almost five years is already huge, despite releasing only 5% of the funds which it promised to loan Duterte.

Aside from the ₱14.4-billion loan from the Asian Infrastructure Investment Bank supposedly for Covid-19 response, China currently has only two “Infrastructure Flagship Projects” in the country with signed contracts. These are the ₱4.37-billion Chico River Pump Irrigation Project and the ₱12.2-billion New Centennial Water Source-Kaliwa Dam, which are bound to destroy communities and grab the ancestral lands of national minorities.

According to the Chinese Embassy in the Philippines, only 11 Chinese-funded projects projects have been delivered, while 12 others are yet to begin. Majority of these are bridges and roads, including the Binondo-Intramuros Bridge and Estrella-Pantaleon Bridge which are both in Metro Manila. Other projects were cancelled such as the 32-kilometer Panay-Guimaras-Negros Bridge, which according to Sen. Franklin Drilon will be left to the next administration. Other projects were cancelled by local governments such as the Sangley Point International Airport Project in Cavite.

In sum, the Philippines has received ₱28.8 billion in loans from China, which is way lower than loans from Japan (₱537.6 billion), Asian Development Bank (₱408 billion), and the World Bank (₱254.4 billion).

https://cpp.ph/2021/06/07/china-wagers-on-duterte/

Here is their statement on ordering the NPA to target Chinese companies in the Philippines, yes they sent the statement to RFA originally, but that's honestly not surprising. The left wing of the party (often called Stalinists) in Romania who wrote the Letter of the Six used Radio Free Europe to distribute it. Which got some understandable pushback, but you get why they used them. According to very much pro-Stalin Apostol, others who wrote it hated using imperialist means to communicate, but it seems they wanted to be clear this was an internal party thing and not necessarily agents of the USSR.

I don't necessarily agree with the framing 100%, and there is plenty of understandable rhetoric involved as any political statement, but the concerns are interesting to dive into. Here is Marco Valbuena's annotations on Xi's speech on the centennial of the CPC. Plenty of silly hangups, but interesting nonetheless. Above all I get why they want no fucking involvement with foreign industry coming into the Philippines, and no ceding of sovereignty over the waters even if the international law on those zones is biased against China. For them it is a matter of fishing communities being screwed over by major companies and a fear of military encroachment which will put them in the crossfire

https://cpp.ph/statements/critical-annotations-of-xi-jinpings-speech-at-a-ceremony-marking-the-centenary-of-the-communist-party-of-china-on-july-1-2021/