Jiao-Zhu-Gu-Se means to be stubbornly stupid or extremely inflexible and unimaginative. It has a similar Jiao-Zhu-Gu-Se the Se (Zither) in the saying refers to an ancient musical instrument, which had 50 strings each, fasten to a wooden bar. By loosing or tighten the bar the sound changed accordingly. But if the bar were fixed in place with glue it would be impossible to tune the instrument. Which there fore could not produce beautiful music. So Jiao-Zhu-Gu-Se has come to mean extremely stubborn and inflexible. 

Susan puts all the saying she has learned together by saying, He had not studied hard and so cheated on the exam but he did not expect that Lang-Dang-Bu-Chan that the teacher had been watching him close behind.

He finally failed the exam. David continues and says that after he went home he was so depressed that he had an argument with his family. As a result no one wanted to talk to him anymore. And he got into a situation that could be described as Jiao-Zhu-Gu-Se. 

Chao Chuan adds that he is always very stubborn and like to Jiao-Zhu-Gu-Se.  And so he always fails in everything he does. David is happy the he and Susan have made great progress in Chinese lately. But Wen Wen tells him not to be to carry away by the progress or else he might try hard in the entrance exam to the graduate school at the Chinese department David agrees. 

My friends we have learned many Chinese saying in today as well as our three previous programs. They are all very basic expression and among the most commonly used. But they are only a small tip of the iceberg of Chinese saying. Now that you have learned these interesting expressions we hope that you are motive to learn more saying the more of these you learn to use the more learn to use the more interesting and vivid your Chinese will become good luck and good bye.