楚肃王 / King Su of Chu
楚肃王 / King Su of Chu appears in Zhouji 09 as the newly enthroned ruler of 楚国 during the early Warring States melee. The source says Zhao seeks Chu’s help after being pressured by Wei and Qi, but Chu Su Wang does not simply rescue Zhao; he attacks 魏国’s border instead.
The episode makes him a case of opportunistic alliance behavior. In the interstate-war frame, help and self-interest are not separable: Chu’s move relieves pressure on Zhao while also exploiting Wei’s vulnerability.
《资治通鉴·周纪》10丨 以家族单位 有蚂蚁吃大象的精神（2） records Chu Su Wang’s death. Because he has no son, his younger brother 熊良夫 succeeds as 楚宣王, making this a brother-succession notice rather than a direct father-son transfer.