Unfortunately，Jing Ke failed to assassinate the Emperor of Qin and was killed in Qin。The Emperor of Qin got so furious that he attacked the State of Yan and tried to capture the prince。Jing Ke's followers were in grave trouble。Gao changed his name，and ran to a faraway village to work as a tenant peasant，whose landlord knew nothing about it。
One day，the landlord prepared a feast for his guests。During the feast，the instrument zhu was played to entertain the guests。On hearing the beautiful music of the zhu，he couldn't help making ments on the striker's skill。His critical ments were so professional that everyone present was impressed。The host then asked him to give a performance，which won him great applause。But alas，his real identity was then laid bare。While he conscientiously played the zhu，Gao Jianli was not afraid at all。Whereupon he opened his trunk，and took out his dear instrument that was hidden until now。He dressed in his old-fashioned costume，and fearlessly started to play。
The host and guests were surprised and overjoyed，and no longer treated him as a servant，but as an honorable guest instead。No one wanted to turn traitor against him，only to keep a delightful secret。
“Itching to have a go”as an idiom，is usually used to refer to those who have good skills and are always longing to give a show。