According to the other boys' accounts, who played with my classmate (hiswhose surname is Zhu), here is what happened.

This was an incomplete sentence.

あるいは、
According to the other boys who played with my classmate (whose surname is Zhu), here is an account of what happened.

"

Since the account is lengthy and it sounds as if you're relaying the information, we don't need the quotation marks.

Zhu continued to challenge and make mug faces at them, so this may have been what makde the captain angry.

The captain later quietly ordered his soldiers to turn their direcattention toward to Zhu's positionZhu and suddenly ordered them to beat Zhuhim until they were ordered to stop.

また、

The captain later quietly ordered his soldiers to approach Zhu and suddenly ordered them to beat him until they were ordered to stop.

残念です。

Zhu was instantly beaten down underwith their hands and legs.

The blood poured out of his body, and some of the grass under him turned to be crimson.

残念。とても悲しそうです。

The force was so strong that it knocked two teeth right out of his mouth, h. He lay on the ground at once, this all being done in a minute.

また、

The force was so strong that it knocked two teeth right out of his mouth. He fell to the ground at once, this all being done in a minute.

The soldiers stopped their exercisinges and went back to the fire station.

"

A boy ran to the school and told Zhu's father about the horrible disaster to Zhu's father,. Zhu's home was inat school.

A boy ran to the school and told Zhu's father about the horrible tragedy. Zhu's home was at school.

All the children from the fire station were studying at my school, t. The leader of the army knew it would be a big trouble for them, so he promised tohe school that they would punish any soldiers who were involved in this incident under military laws.

Zhu, however, stayed atwas in the hospital for nearly one month.

In the US, we usually say someone is "in the hospital."

あるいは、

Zhu, however, was hospitalized for nearly one month.

Zhu continued to challenge and make mug faces at them, and this may have makde the captain angry.

The captain later quietly ordered his soldiers to turn their direction toward tos Zhu's position and suddenly ordered them beat Zhu until they were ordered to stop.

Zhu was instantly beaten down under their hands and legby the soldiers.

The blood poured out of his body, and some of the grass under him turned to be crimson.

Th forcee beating was so strong that it knocked two teeth right out of his mouth, he lay on the ground at once, this all be done iand knocked him to the ground immediately, all happening in less than a minute.

The soldiers stop exercisingped and went back to the fire station.

A boy ran to school and told Zhu's father about the horrible disaster to Zhu's father, Zhu's home was in school.

I don't quite understand about this. He was living in the school?

All the children from the fire station were studying at my school, and the leader of the army knew it would be a big trouble for them, so he promised tohe school that they would punish any soldiers who were involved in this incident under military laws.

Zhu, however, stayed atin the hospital for nearly one month.