My Human Index Is Failing

In Jiangbei in 2045, the law stipulates that everyone must undergo a "Human Index" physical examination once a month to evaluate how "like a human being" you are. Engineer Lin Xu had doubts about his relationship: his girlfriend Eve might not be human. What's even more strange is that his own score dropped all the way from 74 to 37, and he was asked to go to the "man-machine co-education class".