What seemed like mindless fun was perhaps taken a step too far by pupils, apparently from primary schools in Tampines.
One of the videos shows a young boy in Yumin's red shirt and black shoes, running along the roof. Another pupil, a girl apparently also from Yumin, stands on the ground and flings an unidentifiable object at him.More crashing sounds can be heard later on, although the reason behind these crashes are not seen in the video.
Another Junyuan pupil manages to throw a floorball stick onto the roof, narrowly missing the girl standing on the roof. The roof is about 2.2 to 2.4 metres from the ground.