I'm also not clear on the way the single-entry and double-entry visas work. I was issued a single-entry visa a while back which I was required to use within 3 months. Once in China, I had 30 days to leave. I stayed for a few weeks and came back. I'm going back to China for a longer visit exceeding 30 days. Do I need to apply for a double entry visa? I would then need to leave China after 30 days and then come back for another 30 days I'm I right? And by leaving China, I can go to any neighboring country and come back, can I? Thanks for your insight.