Biology; Like general zoology, if you feel easy, you can read some university textbooks like botany (1), botany (2), zoology, plant physiology, human and animal physiology, genetics (1), cell ecology and biochemistry. There are also some auxiliary teaching materials for the Olympic Games. If general zoology is easy, you can read some university textbooks such as botany (1), botany (2), zoology, plant physiology, human and animal physiology, genetics (2), cell ecology, ecology, biochemistry and some Olympic auxiliary textbooks. There are many classic detective mystery novels, which are beautiful and famous. I'll choose some introductions for you.

Needless to say, the classic Sherlock Holmes, give me a full set of reading him! !

European and American classics include agatha christie's books and many classic novels written by her. Murder on the Orient Express, ABC Murder and Roger's Mystery are all classics.

If you like secret room killing, look at John Dixon Carr's Three Coffins, which is the world's number one secret room killing in Europe and America.

There are Alley Quinn's The Mystery of the Egyptian Cross and The Mystery of the Greek Coffin.

Japanese classics include Prison Gate Island written by Seishi Yokomizo.

Seicho Matsumoto's software and dots and lines.

Xia Yan Jing Gu's The Wake Box

Finally, China's "Pit of Human Feelings-Men with Two Blood Types" (also known as Crazy Girls) was written by He Jiahong (this book was rated as the top ten best detective mystery novels in Asia. )

Qiu Xiaolong's "Death of Hong Ying" won the 23rd World Mystery Novel Award "Anthony Novel Award" and was also rated as the top ten best detective mystery novels in Asia. )

If there are too many introductions, I'm afraid you don't know how to start. That's it. I hope this helps.