thanks to silis7noy for the info on this.

Basically theres a construction site near the dorm and it was loud so it woke Taeyeon up. Girl decides to go for a walk, and the arm of that machine was swinging and it hit her in the shoulder and shoved her into the street. Well the hell, how close was this thing to the sidewalk? Usually here we’d see large fences blocking construction sites off from pedestrians if theres a crane going around. Luckily she’s alright but it makes me wonder how close she was to the construction. Crazy stuff.