Who is the nine tyrants in the Spring and Autumn Period?

I don't know. It seems that there are only five tyrants in the Spring and Autumn Period: Qi Huangong, Song Xianggong, Jin Wengong, Qin Mugong, Chu Zhuangwang, King He Lv of Wu and King Gou Jian of Yue, as well as Fan Li (commercial tyrant), Wu Zixu (marshal tyrant), Shang Yang (law), Lin Xiangru (prime minister), Lian Po (military commander overlord), Guan Zhong (political overlord) and Sun Wu (political overlord).