The saying that boys must pass every exam when changing their avatars stems from a psychological suggestion that they can change their luck or state by changing their avatars, so as to get good grades in the exam. However, there is no direct causal relationship between the change of avatar and the test results.

In reality, the results of the exam are mainly influenced by the individual's learning and preparation level, as well as the performance and answering ability in the exam. Changing the avatar will not directly affect these factors. For the real exam results, you still need to study hard and be fully prepared to get good grades.