This time, he is no longer the "sports-difficult person" who hides under the shade of the trees on the playground and is always at the bottom in the 1,000-meter run. With regrets about the past and obsession with health, he clenched his fists and stepped onto the track - from struggling out of breath to pass the passing line, to taking the initiative to practice more and soaking the school uniform with sweat; from being ridiculed as a "bean sprout" to a sunny boy who gradually developed muscle lines.
