I am from Philippines, going in hongkong & macau on dec 12 to 17 will stay in hongkong.

My Question is Where trying to get a tour package in hongkong then it include the Shenzhen tour compulsory mean we have to go there as well, Am not sure if we need a visa in advance couse the agency mention is it is a group one so i dont know what does it means. I hope anyone could help me in my queries.