绝顶聪明

Explanation: Apex: extreme. Described as abnormal smart. 　　Source: Guo, "Zhuang Zi's critical," Chuang Tzu is extremely intelligent person, but also some of his disciples about the person ~. " 　　Examples: ~ Chuang Tzu is the man, his disciples about who is more ~. (Guo, "Chuang-tzu's criticism")