As the train goes away, a large number of withered and yellow fallen leaves are brought up in the vibration of the railroad tracks, and it also brings up the bleakness of autumn.

Wang Xuan watched until the train gradually disappeared, then he looked back and sent a few classmates away.

After this farewell, the world will be far apart, and I don't know how many years it will be before we can meet again, and some people will never see each other again.