Shen Qing, a clinical medical student, is most afraid of making people unhappy. Until the old laboratory building in the medical school that no one mentioned began to operate according to a set of "rules" that she couldn't find - roll call, admission, and shift handover, all of which were indispensable. She could use sight, touch, and hearing to tell the truth from falsehoods, but she couldn't tell how many times she had walked into the elevator under the dim green light. The timid ones have to take a step this time. Not everyone was waiting for her every time she turned around, but there was always someone who blocked the door for her.
