Last night, I read the news about a professor who wrote the paper 20 years ago. He did some research about asking people whether they were happy and he came up with the conclusion that happiness belonged to two kinds of people, they are the one who lived in peace and the other was who lived with great achievement. But 20 years later, he decided to revisit these people and he found that the conclusion about happiness he made before was wrong. Most people with great achievement felt not happy because they met setbacks. The professor came up with the new conclusion that the real happiness lies in the peaceful soul. This is the code of happiness. 
昨晚，我阅读了一则新闻关于一位教授20年前写的一篇论文。他做了一些调查，询问人们是否感到幸福，然后他得出结论，幸福属于两类人，那就是趋于平淡的人和取得非凡成就的人。但是20年以后，他决定重新去拜访那些人，他发现他以前对幸福的结论是错的。大部有着非凡成就的人并不感到开心，因为他们遭遇了大挫折。这位教授得出新的结论，真正的幸福在于心灵上的平静。这就是幸福的密码。