lf a day, we have to go our separate ways again......"That's right, Mom, Grandma, I have something to do too, taking my elder brother's plane back..."All eyes turned to the speaker. It was Li Er.Song...o see it and took him to the hospital.At that time, he didn't know who this kind young man was. He only knew that the other party did good deeds anonymously. Later, he saw it in the news and found out...