The brand was founded in 2014, for Yufeng musical instrument independent brand. The Blue Shield Randon is mainly divided into two series, the standard model and the medieval series. Among them, the Medieval series is designed and completed by Xu Junyuan, the top domestic luthier who is currently serving as the deputy general manager of Yufeng Musical Instruments. The medieval series has the best configuration at the same price, and has the blessing of Xu Junyuan. The standard version retains the previous design language of the Blue Shield Randon, while being gradually upgraded by Junyuan Xu.