《韩非子·奸劫弑臣》
借着进去探病，用他系帽的带子勒死了楚王，于是自立为楚王。
因入问病，以其冠缨绞王而杀之，遂自立也。
By taking advantage of going in to visit the sick, he strangled the king of Chu with the band of his cap, and then he became the king of Chu himself.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 因入问病，以其冠缨绞王而杀之，遂自立也。 [/INST] By taking advantage of going in to visit the sick, he strangled the king of Chu with the band of his cap, and then he became the king of Chu himself.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 因入问病，以其冠缨绞王而杀之，遂自立也。
user
By taking advantage of going in to visit the sick, he strangled the king of Chu with the band of his cap, and then he became the king of Chu himself.
assistant