Prologue Dimensional Gate 8
Chapter 1: Find the Archaeologist! 16
Chapter 2: The Archaeologist's Identity 58
Chapter 3: The Mysterious Ancient City 98
Correct answer 136

Useful learning! Exciting story! Interesting characters!
A new humanities textbook with all three elements
[The Ordinary Siblings' Unusual World Travels] series!
Read it now!

1.
Learn about the history, culture, and art of your travel destination at a glance.

In today's world, where global awareness is more important than ever, what children, who will lead the future, need most is the knowledge of global citizenship.
For this reason, the ability to understand the humanities of the world, including the history, culture, art, and geography of neighboring countries both near and far, has become essential for children stepping out into the world.


This book presents the vast and complex humanities in a simple and fun way, tailored to children's level.
Basic descriptions of each travel destination are included in the story at appropriate places, allowing readers to grasp only the most important information, such as the country's history, traditions, food, and people, as if they were traveling there.
Additionally, we have increased the completeness of your learning by providing a wealth of reading material by including information not covered in the main text on separate pages.
Through this book, you can learn about and understand travel destinations around the world at a glance within the flow of history and culture.

2.
A special themed trip to develop your humanities knowledge!

The [Common Siblings' Unusual World Travels] series is a collection of books that carefully select tourist attractions from around the world where children can develop their humanities knowledge in a friendly and fun way, allowing them to enjoy different themed trips for each topic.
In this episode of 『The Ordinary Siblings' Unusual World Tour 2』, the Ordinary Siblings embark on a journey to the 'ancient cities'. They explore the lost Incan city in the sky, designated as a wonder among the many ancient cities around the world: 'Machu Picchu in Peru'; 'Chichen Itza in Mexico', the center of the Mayan civilization; and 'Petra in Jordan', a red rock fortress city, and embark on a thrilling and exciting adventure.

The Common Siblings will explore the Inca civilization at Machu Picchu in Peru, including the Inca sundial Intihuatana, the Temple of the Sun, and the terraced fields. In Chichen Itza in Mexico, they will experience the long history of the Mayan culture by visiting the Temple of Kukulkan, the representative stepped pyramid, a ball court, and an astronomical observatory.
And in Petra, Jordan, you can admire intricate rock structures such as the Temple of Al-Khazneh and the Monastery of Ad-Deir, and learn the hidden story of how the city was carved into the cliffs.
With the help of the common siblings, you will learn the basics of each country's must-see ancient cities, as well as their historical and cultural values, within the context of the times.

3.
A fun children's book that won't leave you bored for even a moment.

Many existing children's education books have the disadvantage of only listing difficult and rigid information, which reduces the fun of reading and makes it difficult to finish reading them.
This book features familiar sibling characters as the main characters, lowering the barrier to entry for young readers. It is structured so that information can be easily acquired and understood through the dialogue between the siblings.
Above all, the exciting story is beyond imagination, and there are various mission stages such as nonsense quizzes and mazes, so as you carry out the missions with the common siblings, you will soon enjoy reading as if it were play.
Furthermore, by the time you finish reading the book, you will find yourself growing not only in your humanities knowledge but also in your creativity, logic, and thinking skills.
Enjoy a fun and special reading time with this fun-filled introduction to children's culture presented by the common siblings.