Introduction: As the owner of an ordinary bookstore, Ling PingAn''s biggest wish was to muddle through life and do absolutely nothing.However, customers that were right in the middle of their pubescent crisis kept visiting his store in the dead of night.For the sake of his business, Ling PingAn had to mimic their childish tones, sparing no effort to promote the books in his store.When he finally managed to sell his books after going through a great verbal tug-o-war, each and every one of them said that they don''t have money, and that they wish to use various tools that were seemingly divine artifacts as pledge.Looking at these customers, Ling PingAn could only agree to them resignedly....