The video:
【《天才枪手》“小试牛刀”片段】https://www.bilibili.com/video/BV1Ki4y1M7VW?vd_source=a0cb9ff0a423102132cb842ab248319d
This is a shortcut from the movie <Bad Genius> with very few dialogues. It describes how the main character helps others cheat during a test. It quickly switches to each shot with a very short interval to create a tense atmosphere.