The main reason why Douyin ads frequently pop up in the game interface is to obtain more advertising revenue. As a popular social media application, Douyin has a huge user base and advertising resources. By popping up Douyin ads in the game interface, game developers can obtain advertisers' advertising fees and increase the profitability of the game.

In addition, the precise delivery of Douyin ads can also provide users with content that they are interested in, thereby increasing ad click-through rates and conversion rates.

However, frequent pop-up ads may also interfere with the user experience, so it is necessary to find a suitable balance between balancing advertising revenue and user experience.