Writing prompt: A Story About Si Maguang

Student essay:
Si Maguang is a world-famous politician who lived in Song Dynasty.
When he was a seven-year-pld boy, he showed his talent. One day, when he was playing hide-and-seek in a yard with his friends, one of them dropped into a big tank which was filled with water and asked for help. Some of them were crying because of the scare, some were out for help, but only Si Maguang found a way to save him.
He hit the tank hard until it has been broken and the water ran out, then the child was able to get out of it. The adults soon arrived. To their surprise, the child had already been saved by Si Maguang.
I think the reason that Si Maguang made a big success was that he could think about the same thing in a different way from others.

Corrected essay:
Si Maguang is a world-famous politician who lived in the Song Dynasty. When he was a seven-year-old boy, he showed his talent. One day, when he was playing hide-and-seek in a yard with his friends, one of them dropped into a big tank which was filled with water and asked for help. Some of them were crying because of scare, some went out for help, but only Si Maguang found a way to save him.
He hit the tank hard until it was broken and the water ran out, and then the child was able to get out of it. The adults soon arrived. To their surprise, the child had already been saved by Si Maguang.
I think the reason that Si Maguang made a big success was that he could think about the same thing in a different way from others.