Apprehensively, I shall go through a couple of flaws. Some of them, including my wife, are stubborn. By the way, I must acquire the courage to admit that I am as stubborn as she is. That led me to master the most useful Chinese characters "Zhidao" and "Dong", which mean "I know" and "I understand". Those two terms saved me from wasting my energy on trivial arguments that might have led to inflicting mental anguish upon both of us. To give an example, I was unable to convince her that foreigners are not as romantic as they appear on movies.