巾幗梟雄
It was reported that Siu was cast in March 2012. In 2008, Siu was in final negotiations to film Lee's award-winning drama "Rosy Business", but had to withdraw because he was unable to shave his head, which was required for his role in "Rosy Business". Siu reportedly rejected a high-paying production in order to accommodate his schedule to film "Bullet Brain".