Some people can't distinguish the relationship between the individual and the collective. They will only take care of their personal interests regardless of the collective ones while working and dealing with problems. Doing so will cause some losses to the revolution and do harm for the collective. I think it is critical for us to have a clear understanding on the relationship between the individual and the collective.
I think the relationship between the individual and the collective is just like the one between the cells and the whole body of a human being. When someone's body is damaged, the cells are inevitably damaged. Likewise, the happiness for each one of us depends on the prosperity of our motherland. If we do harm to the interests of the motherland, none of us can get any happiness.