There were some marble balls in Yan Su's A-line Denim skirt. She threw them on the floor from where those four girls were coming.
The girls were so busy gossiping that they didn't hear the sound of the marble balls rolling down.
The one with the short hair put her right leg on a marble ball and fell on the floor. The girl was wearing a circle skirt. Therefore, as she fell down, her shirt flew up and revealed her round buttocks wearing black thong.
It was around half past eight, female students were still walking around the corridor. Looking at the girl falling down, some laughed loudly, some tried to hide their smiles, and some even took photos and videos.
The three girls who were accompanying her, were frozen due to the scene that happened before them.
The girl who had fallen screamed in pain. As she fell flat, she hurt her chin causing her lips to bleed.
