It's been a long time since I last checked out Bola Network. First, because many of the topic advertisements on Bola Network are about cars or something like that, and as someone who knows nothing about cars, I didn't feel qualified to apply for them. Second, Bola Network seems to be often inaccessible, perhaps due to unstable servers. But as a gateway for grassroots blogs (if we can put it this way), such service quality is disheartening. In fact, apart from topic advertisements, Bola Network also introduced something called blog video ads (blog frame ad rotation). However, it has always been in testing phase, maybe because they haven't found advertisers yet. So-called blog frame ad rotation is actually a video ad. Once you pass the application review, you will receive a piece of code that you can place on your blog, which is somewhat similar to the first video ad.