The book takes the form of a novel and letters to depict seven middle school students of different traits. Many interesting stories happen to them, who are troubled by lack of good learning skills. With the direction of a mysterious letter, they work hard and find most effective ways of learning.
Shang Yang (390–338 BC), also known as Wei Yang, was Chinese legalist philosopher and important statesman of the State of Qin during the Warring States period of Chinese history. His policies laid the administrative and political foundations that would enable Qin to conquer all of China, uniting the country for the first time and ushering in the Qin dynasty.