The vocabulary in this book is the most basic. As an entry level, the level of about four is enough. Moreover, interpersonal relationship model is also a compulsory course in universities. I believe you will gain something after reading this book.
No. 1 Women's Detective Agency
This novel will make you want to continue reading, and it also has an HBO TV program with the same name. If you don't understand in the book, you can also search and watch, so as to have a more comprehensive and thorough understanding of each case!
If tomorrow comes
Recently, I lost my classmate. You can read this one. It is a classic inspirational work of the father of popular novels, with a young and beautiful strong woman as the protagonist and blooming flowers of justice! The novel is easy to understand, and there are no long and difficult sentences, which is very helpful for learning the usage of authentic English!
Harry Potter
Everyone should be familiar with this book. Students on vacation are strongly recommended to watch movies. Trust me, you will thank yourself. It has seven books, the difficulty of which is not exactly the same. The first language is very simple, and it will be more difficult to read from the third one, so Harry Potter is very suitable for learning English.