"My father is a courier. He seldom stays at home. Every morning, when I wake up, he has gone to work. I wait for weekends to come, when my father has time to play with me. My father is the greatest man in my mind, because he can bring joy to others."

A composition entitled "My Father is a Courier", which was written by a first-grade pupil, is gaining popularity on WeChat, a popular social media platform. Many couriers have said the piece brought a tear to their eye.

The author, Yu Zixuan, is a 6-year-old student at Jiamusi Friendship Primary School in Northeast China's Heilongjiang province. His father and mother both work at a postal sorting center in Jiamusi city.