Combining with my second foreign language learning experience（2） But I feel it is interesting is that he cited Zhang Zi’s one-paragraph: In the 4th century B.C.,Have a person ,he name is Zhou Zhuang (According his nature,maybe he didn’t like people call him Zhuang Zi with philosopher’s meaning.) He published many abstruse life truth. Cause a Pragmatists’s antipathy.This person is Huishi. One day he said to Zhuangzi, “This old tree is so crooked and rough that it is useless for lumber. In the same way, your teachings have no practical use.” Zhuangzi replied, “This tree may be useless as lumber, but you could rest in the gentle shade of its big branches or admire its rustic character. It only seems useless to you because you want to turn it into something else and don’t know how to appreciate it for what it is. My teachings are like this.” Zhou Zhuang and Hui Shi ,none of them is a carpenter or a lumber businessman, They just use the big tree to expound their sense. However, 2300 years later, not in China,but in Canada ,have a genuine wood industry’s professional found this metaphor.