Hi, I am a Philippine passport holder on a tourist visa in japan.

I'm planning to go on 1 week holiday on the 1st week of January 2017 in Shenzhen and Dongguan China. i already have a round trip flight reservation and hotel reservation. What other documents do i need and how many days will it take to get the visa. I used to hold Multiple china entry permit before for my business trips in my previous company. Thank You Very Much.