★It is created by Lydia, a well-known children's writer, prolific writer, and the winner of the “Great White Whale Original Children's Literature Outstanding Work Award”, whose works have touched millions of readers with the unique charm and deep emotions!
★Heart-pounding plot, a rhythmically tense adventure journey, carrying suspense and reasoning to the end.
★Integrating elements such as animals, plants, geography, history, humanities, and scientific knowledge into the story, while reading, learn popular science knowledge, wilderness survival skills, and emergency survival skills, to cultivate children's ability to live independently.

This series includes 6 titles:
"The Lizard Man of the Swamp"
"Amusement Park Nightmare"
"The Wandering Cat Lady"
"The Tree Man Bell"
"The Killer Hidden in the Painting"
"The Nine-Headed Bird Man"

The renowned children's literature author Lydia's special feature includes 58 books:
Super Detective Trio series(21 books)
Cowards in Action series(11 books)
Help with Magic Series(9 books)
The Young Adventurers' Team series(6 books)
Ice Cream Spirit series(4 books)
The Odd House series(4 books)
Young Detective Polo series(2 books)
The Green Light Forest

Koko and Saisai, who are full of detective spirit, after careful and meticulous investigation, discovered a terrifying secret - all the classmates who had been painted by Keka had mysteriously disappeared, and no one knew where they had gone. What was very frightening for Koko and Saisai was that in Keka's school bag, who always looked melancholic and had a cold expression, there were actually portraits of the two of them. As a result, one day not long after, an accident almost cost them their lives at sea.

In a state of shock, Koko and Saisai received mysterious letters from the missing classmates. Following the information indicated in the secret letters, Koko and Saisai finally discovered three very eerie paintings. Each painting depicted a rural farmhouse with windows that would open and close on their own; a dark castle filled with zombies; and a seaside cabin with huge waves rolling. It turned out that each painting imprisoned a missing classmate.

In order to rescue the missing classmates, Koko and Saisai decided to take brave action. However, just when the truth was about to be revealed, they were shocked to find that the building where Keka lived had mysteriously disappeared. What appeared in front of them was just a dilapidated fruit shop...

Lydia

Original name Cui Hongmei, is a children's writer and animation scriptwriter. She loves mystery, adventure, suspense and deduction. She has published works since she was 17 years old, impressing millions of readers with her lively writing and bizarre plots.
She has published more than a hundred children's works, with diversified themes, including detective, youth campus literature and mystery. Her representative works include “Coward in Action Series”, “Wacky House Series”, “Help with Magic Series”, “Super Detective Agency Series”, etc. She is also the author of “The Beast of Mangyuan” and “Dragon Lake Fairy Dream”, which have been awarded the “Great White Whale Original Children's Literature Outstanding Works Award”.

The Missing Zou Ya
Deadly Temptation
Clues
The Golden Dog in the Painting
Strange Feidi
I'm Not the Only One Peeping
Is He Going to Kill Me?
Deciphering the Code
Grandma
The Mystery in the Xinhua Dictionary
GGZ
Kidnapping
The Old Tailor's Courtyard
Deal