I'm Taking an Exam in a Dangerous Exam Room

Any similarity is purely coincidental. Eight years later, the universe split and was controlled by an examination system. Those who won the lottery died, but the lucky ones passed through the large-scale control lottery system in another world. Congratulations, you were lucky. Cremation Ground Welcome to the random lottery examination room, all candidates who are selected please be prepared. Yan Yu, a handsome and cold man with an extraordinary IQ, has always been unlucky. I was lucky enough to be hit by the system. [Congratulations on winning the exam number 112 and being cremated in exam room 178, please go quickly, this exam subject is chemistry] System failure? Why are the subsequent proctors all 0038? 0038: This 112 candidate is so awesome, he is trying to catch a mouse with the system! The results will be announced for each test, and those who fail will be punished accordingly. [A problem in the examination room is found and the system is automatically updated. Candidates and invigilators are asked to prepare for the lottery. The next examination is about to begin] Rule 1: Candidates are not allowed to have any behavior unrelated to the exam. Once discovered, violations will be dealt with. Rule 2: All examination tools are provided by the examination room system, and candidates only need to bring their hands and brains. Rule 3: You are not allowed to answer questions after the exam. You will automatically leave the venue and wait for the results to be announced ten minutes later. [I hope all candidates will achieve great results again and answer the questions carefully] Intention: Run quickly!