2018-12-17 伤害是双方的，因为争夺的是稀缺资源

    Let's talk about hurting. In life, we have just 24 hours per day, but we need to prepare for  4 tests what will you distribute your time? I think it depends on which test is more important. One you need to have a test tomorrow, I think we may use most of our time to prepare for this test. So in life when two things conflicts. We need to think further.