This conclusion is somewhat arbitrary. There is no absolute selflessness at any time. Although the feelings between classmates are pure, how about dividing people like this? If this person is selfish, self-centered and doesn't make full use of his advantages. Bullying others is not negotiable. Can you expect to have selfless feelings with such a person? Everything is relative. And in the absence of conflicts of interest, the character is better. Such a person can be said to be selfless, just like the veteran who sacrificed several others to help the sacrificed child finish his college studies. This feeling is selfless. Therefore, it cannot be said that the feelings between classmates are selfless, and everyone is selfish and selfless. The key is still people.