At this time of year, most high school graduates anxiously face a major decision in life - what college to attend and what major to study.

Bi Mingzhe, a high school student in Linxiang, Central China's Hunan province, shoulders his classmate Wang Li on his back on their way to school.

They could risk losing the achievable if they reach too high or they may later be filled with regret if they aim too low.

For Bi Mingzhe from Linxiang, Hunan province, the decision is free from either anxiety or regret.

He has scored high enough to land a place at a national-level university, though he has decided to let the opportunity pass and, instead, to attend a provincial-level college in Changsha, the capital city of his home province.

He made the decision because of a commitment, one he has kept for six years and hopes to maintain.

It all started six years ago when Bi first became a high school student.

As the class monitor, Bi was placed in charge of locking the classroom door after school. When he carried out his duty for the second time, he found a classmate still sitting in the room.

That was the first time Bi spoke to Wang Li, who lost the ability to walk early in childhood after suffering debilitating muscle atrophy in both his legs.