1. According to the query of Jiuyou. Com, after entering the game animal restaurant, click the "menu" option in the lower right corner, find and click the "facilities" option on the menu page, find and click the "kitchen facilities" option on the facilities page, and find and click the "red bean double skin milk" facility on the kitchen facilities page.

2. Click the "Buy" button below on the facility page of red bean double-skin milk. After the purchase is successful, you can get the price increase license of red bean double-skin milk.