 "Jian'an" refers to the 196–220 period during the rulership of the Emperor Xian of Han.Known as the time of unrest preceding the Three Kingdoms era, the period gained popularity in the East Asian culture.The seven scholars are Wang Can, Chen Lin, Ruan Yu (阮瑀), Liu Zhen (劉楨), Xu Gan, (應瑒), and Kong Rong.