The Lemonade War:

In this book, Mei Li the protagonist leaves a deep impression on readers with her simple and cheerful personality. She only has three copper coins as new year money. First, she gives one copper coin to Li Da, a girl who needs money for the Spring Festival, then she resists the temptation of food and buys firecrackers with the second copper coin, and at last she gives the third copper coin to bring luck to her elder brother Sheng Yu. Despite that Mei Li is somewhat upset when the new year money is used up, a Taoist fortune-teller's prophesy of ""ruling a kingdom"" makes Mei Li excited. After a day of adventure in town, with the help of Li Da, kind-hearted Mei Li gets out of town and sets foot on the way home. All the toil and hunger melt away the moment Mei Li sees home. Mom's gentle greetings and, the steaming hot New Year's Eve dinner are the anticipation of every person who has been away from home for long.

The Lemonade Crime:

In The Money Vanishing Mysteriously, Jessie earns as much as 208 dollars after the fierce ""lemonade fight"". In order to win his sister, Evan hides the money in his own pocket. Unexpectedly, the money is stolen. Then who steals the money? Could it be the bad boy Scott? To find the truth, Jessie mobilizes all the students of the class and organizes them to form an economic court. In the court, there is the Judge, accuser, defendant, lawyers, jury, witnesses and audience.

The Bell Bandit:

In Who Steals the Big Bell, Jessie and Evan realize their desires with the money they earned in the ""lemonade fight"". The new year is coming and mother takes them to grandma's house for the new year. There they meet their new friends, but things are not as perfect as they think: grandma burns the whole house first; then Jessie finds the Big Ben on the top of the Bear Mountain has gone; when grandma comes back from the hospital, she even doesn't know her grandson Evan! Why do these strange things happen? Clever Jessie swears to solve all these mysteries.