I have a commercial advertisement shooting that will take place in China

I am Syrian passport holder residing in Malaysia and I was asked for TV commercial shooting that will take place in China. I know that I need a visa but not sure what type of visa (Z, L, M). The shooting will take 1 week tops. Can you confirm which visa class u should be applying for? In my case, I don't think there is a Chinese Counterpart that can provide employment letter (requested for work visa Z). Do you know the documents required in my case? Thank you.