What does it mean to take a banner photo?

this group photo means a specific shooting method, which is often used in group photos or group activities.

"Take a photo with a banner" is a common way to take a photo, such as group activities, celebrations, demonstrations and protests. By displaying words, patterns or slogans on banners, participants can collectively emphasize a certain theme, appeal or belief, and convey this information to a wider audience through photos.

"banner-pulling group photo" usually means that when taking a group photo, participants hold or hang large banners or placards to express a certain slogan, declaration or blessing.