Each book uses characters, words, and grammar that a learner is most likely to know at each level based on in-depth analysis of textbooks, education programs, and natural Chinese language. Every story is written in a style that is easy for a learner to understand and enjoyable to read. Level 1 is intended for Chinese learners who have obtained a middle-elementary level of Chinese. Most students will be able to approach this book after one to two years of traditional formal study. This story is written using approximately 300 characters and contains approximately 400 elementary words. Mr. Xie was recently hired by the Curly Haired Company. For a significant weekly allowance, he was required to sit in an office and copy articles from a book, in the meantime his assistant looked after his shop. He had answered an advertisement in the paper and although hundreds of people applied, he was the only one selected because of his very curly hair. When the company unexpectedly closed, Mr. Xie visited Gao Ming (Sherlock Holmes) with this strange story. Gao Ming is certain something is not right, but will he solve the mystery in time?