Nhờ sửa bài giúp

I have a very funny story but i don't how to protect its sense of humour .

These is some events : - last year my sister asked me to watch chinese opera she told me that it's very different so .

I was so excited to watch the video.

- when the music started i confirmed what my sister told because i never had listen to such music .

The surprise was when the singer (a woman) sing ..

omg the song was funny and i couldn't stop laughing.

- i showed it to my friend/colleague he told that he was not able to finish the video he thought that it was terrible.

- the day after we had a history's lesson , the teacher asked my friend to read some documents about chinese economic , so he began to read ... suddenly he started to laugh ,the teacher was angry ,me and our colleagues were wondering .

The teacher ordered him to leave and not to attend the lesson.

- when i came back to home i chatted with him he told me that i was the reason of what happened he asked me to open the history book and to see a specefic picture .... i was shocked when i saw a chinese woman that she looked like the singer ( for us all the chinese are one ) i understood what happened in the history lesson.