1. Reasons for cooperation: Shandong Hanlin Hotel has a certain cooperative relationship with Tianjin Watermelon Tourism Co., Ltd. Booking a room in Shandong Hanlin Hotel on the US delegation is actually done through Tianjin Watermelon Tourism Co., Ltd..
2. Outsourcing: Shandong Hanlin Hotel outsourced some of its business to Tianjin Watermelon Tourism Co., Ltd., responsible for booking services and financial processing.