Before the termination of the contract, Han Geng's popularity was suppressed by the former company. Geng Fan's exclusive auxiliary materials and lighting signs brought in concerts and live programs were confiscated and prohibited from entering the venue. Although Geng Fan was suppressed so badly, he still wanted Han Geng to know where his food was, so Geng Fan came up with a way and decided to make soft light signs, gestures and other auxiliary tools ~ ~ small and easy to hide. After several considerations, the color of glutinous rice is yellow, and the most obvious contrast color of blue is yellow. (2) Yellow has been a symbol of kings since ancient times. The color of the dragon was chosen because Han Geng was called "King Han Geng". (3) China people who have represented Han Geng abroad. So the little yellow flag was born, bright and conspicuous warm yellow, which is not only the message that Gengfan wanted to convey to Han Geng, but also the feeling that Han Geng gave Gengfan ~ warm sunshine. Han Geng liked it after seeing it at a concert, so he has been using yellow since then.