Guan Yu, whose name is Yun Chang, is a famous general in the history of China. He is upright and tenacious, has superb martial arts and is famous for his loyalty. The idiom "Playing broadsword in front of Guan Gong" comes from his story. This idiom refers to a person who is extremely brave or overreacts under the supervision or superior leadership.

It is said that Cao Cao besieged Fancheng and Guan Yu was the garrison commander of Fancheng at that time. He fought for many days, and the soldiers were too tired to fight any longer. Guan Yu pulled out his broadsword and stood on the top of the city to announce: I will cut those who dare not fight! As a result, his soldiers regained their morale and set off. This idiom describes a person's fearless, indomitable and fearless spirit.

Guan Yu was famous for his loyalty all his life. Even in the face of difficulties and dilemmas, he persisted in his beliefs and behaviors. The idiom "Guan Gong Crossing the River" describes that when he crossed an undercurrent and turbulent river, he insisted that his horse stepped on the stone and made steady steps. This idiom means that a person is unhurried and very steady when dealing with things.