What books about relativity and quantum mechanics are suitable for junior high school students?

Hawking's popular version of A Brief History of Time can be seen in junior high school.

The new book "Grand Design" is also good.

Cao Tianyuan's Quantum history of mechanics tells us the development history of quantum mechanics and has a general framework for it.

Liu's trilogy of Three-body is science fiction, but it should be quite interesting for junior high school students.

If you are interested, you can also look at Elegant Universe, which introduces string theory. The former part also involves relativity and quantum mechanics.

Video: Search "PBS" online. Nova Elegant universe. " There are three movies altogether.