What are the check-ins and multiple round trips in Qunar.com?

Only new users have the benefit of multi-check-in and multi-refund. This is the first time to use Qunar.com's mobile phone client to make a reservation. Check-in refund is more than ordinary cash back, so only new users have one chance. After you check in, you can check in at or near the hotel and return it quickly (less than an hour). But at this time, the money is frozen, and it takes 1 month for the balance account to be unfrozen and transferred out. (PS: I also learned about this problem a few days ago. I just made a reservation with Qunar.com's mobile phone client recently. I gave it a try and shared my experience with you.