Grandpa's indenture

Chen Jing has a book that was left to him by his deceased grandfather, said to be a compact book.

It is said that this book can cross the sub-dimensional barrier of space and go to a fantasy world to realize his dreams.

At first, Chen Jing didn''t believe it, and just thought it was a relic of his grandfather, leaving behind a thought.

However, just one day, this indenture book unexpectedly glowed and pictures appeared ......