This is a simple question. I have a 30 day visa. I entered China again on the 13th, which gives me 30 days to exit. My question is, when does the clock start ticking. Do they count the day you come back in as a day, or the space of time between the 13 and the 14th as a day. If the 13th to the 14th than I must leave again by the 13th. If they count the 13th as one day itself, I must exit again by the 12th. It's all a little confusing, but a simple enough question, so I hope someone out there can answer it for me. Thanks.