

Hello, and thank you for your time. I'm traveling to Australia from the United States,
via Beijing and Kuala Lumpur. I would like to know if I can stop in Beijing both ways. On my way to Australia I would only need to stop for 5 hours to wait for my next flight (I assume this is a simple 24 hour direct transit), but in my return to the United States I would like to request the 72 hours free transit so that I can see the city. Is it ok that I'm stoping in Beijing both ways? Also, before buying my ticket, I would like to know whether is true that the 72 hours start counting on the first hour of the following day. I'm looking at a ticket that arrives to Beijing at 01:30 AM on April 16th, but my flight back to the United States doesn't leave until 16:30 on April 19th: is that ok or do I need to find a different flight that leaves earlier? Thank you very much for your help!