1. In order to promote its own brand and service, the hotel attracts more users by publishing coupons on the map of Gaode.

2. Gaode Map has a cooperative relationship with the hotel. The hotel will provide some coupons to Gaode Map to attract more users to use Gaode Map to book hotels.

3. Gaode Map will also recommend some coupons to users to attract more users to use Gaode Map to book hotels.