To reward the customers and to encourage online booking, Ctrip will issue vouchers for the guests who book the hotel online and then do the check in. They will get the maximum 100 Yuan voucher per room per night during 15 July to 30 Sep (booking periods). Ctrip prepared worth 5 Billions in total for this promotion, it is the largest promotional efforts in the history. When the guests book the hotel, they would also enjoy discounts of the travel products.
For more details on the Chinese site, go to:
http://pages.ctrip.com/commerce/promote/201007/hotel/djdsq/index.html