Liangliang and Jingjing are twins. They have always had a wish that they want to travel all over China, seeing the great landscapes of the motherland, feeling the splendid history and culture, and appreciating the changes of China. Before graduating from primary school, Liangliang and Jingjing finally realized their wish... In the form of travel notes, the series shows China's geography, culture, economy, technology and society in an all-round way through the twin brother and sister—Liang Liang and Jing Jing's travels around China and what they see, hear and feel. The series is divided into 6 volumes according to the geographical divisions of China.