1 /5 Yachen Zhu: First, the lady at desk B in the morning of 8/11/2023 was really rude to me when I tried to borrow a pen to write my name to my sample. Second, I waited 40 minutes just to drop off my sample that I collected at home. My original number was skipped for no reason, when I found that someone with a number larger than me got to be called while I was still not, I went to get another number, which was finally called. This whole process cost me a long time!