与仙笈介绍:Once I received a thank-you note from a friend whom I had helped. In the envelope were five lottery tickets that had been scratched, revealing the numbers. "Thank you very much for your help," the note read. "As a gift, I bought you some lottery tickets- sorry you didn't win. "有一次,我收到一封感谢信,是一个我曾帮助过的朋友寄来的。信封