【释义】不符合礼仪的礼节，不顾和道义的行为，君子是不会做的。
当一件事有趣时，探寻其中隐藏的真相。
Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.