It is true that hard workers are always fighting against the attraction of sleep. The allusion（典故） xuan liang ci gu, which means tying one's hair to the house beam（房梁）（大腿） with a sharp tool, tells 1 stories about the hard experience of keeping awake.
In the Eastern Han Dynasty, there was a 2 politician named Sun Jing, who really enjoyed studying, even in the 3 . In case he fell asleep when reading at night, Sun 4 a special way that would help him. He tied his hair to the beam while 5 . Then, if he felt sleepy, his hair would be pulled upward by the rope and the 6 would wake him up.
Before you are 7 by Sun's action, the story of Su Qin, another celebrated man who lived in the Warring States Period（《战国策》）, when Su was young, he 8 so many times to get a governmental position that he even let his family down. So he 9 to work harder. When he felt sleepy at night, he used a sharp tool to stab at his thigh so that he would become awake and focus on reading again.
10 , Su's hard work were rewarded. Finally, he realized his dream and became successful. Then, people joined Su's story with Sun's and created the allusion xuan liang ci gu. At present, their amazing spirits are still meaningful and encouraging.
