Target language: English
One day at high school, I was transferred from an old building into a new one.
In the first week and as the teacher was giving a class, we heard the sound of students shouting from a distance, the teacher jumped up and opened the door only to see very thick smoke in the hallway, and students started screaming thinking it was fire, and the teacher let us out with order so as not to create a jam. We went out to the courtyard, and after a short while, firefighters arrived, they found out that the smoke was coming out of the chemistry lab because some chemical substances fell off.