You can go to the activity page on the homepage of the handheld high-speed rail APP, or search for "high-speed rail ordering" on Baidu APP, and enter the activity page to get a free drinking coupon. According to the query of high-speed rail network:

1. Order bottled water through "high-speed rail ordering", and the order amount can be deducted with free drinking coupons.

2. After the order is placed successfully, the train staff will send the water to the passenger seat.