A short trip to hongkong, macau and china for a week of one or two

Hello everyone,
I am going back to the Philippines for a month vacation. I am a Filipina.
I am planning to visit HK, macau and china ( if there's time left)
Do I need a travel visa for sightseeing? Does anyone knows what for requirements I need to show to the chinese embassy in Manila?
Thanks a lot for the good response, in advance.