A possible concise summary is:
This is a video transcript of 50 life hacks for school, such as how to make a crossbow, a stationery knife, a secret cheat sheet, and a spy smartphone. The video also includes a lesson on juggling and a prank with a phone. The video ends with a mandarin salute and asks for likes and comments.
Here are the key facts extracted from the text:
1. The text is a transcript of a video that contains various life hacks for school.
2. The video consists of two parts, each with 50 life hacks, and the second part will be made if the video gets 50 likes.
3. Some of the life hacks involve making or using cheat sheets, secret hiding places, stationery items, games, and pranks.
4. Some of the life hacks also involve improving one's memory, mood, health, and skills.
5. The video ends with a lesson on juggling with three balls and a request for comments and wishes.