Liang Ji
Emperor Zhi ascended the throne when he was seven when his third cousin, two-year-old Emperor Chong died, and although he was still a child, Emperor Zhi was remarkably intelligent and he knew and was offended by the immense power Liang Ji had over the government—leading to him once commenting that Liang Ji was "an arrogant general." This act of defiance angered Liang Ji, who proceeded to poison the emperor. Emperor Zhi was only eight when he died.