Chinese mythology, folktales, and literature
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In 241 BCE, five of the six eastern states – Zhao, Han, Wei, Yan, and Chu – formed a final vertical alliance (hezong) against Qin, with Qi abstaining.
When King Zhaoxiang of Qin learned that Wei and Chu were sending troops to relieve Zhao, he personally traveled to Handan to oversee the siege. Fearing no rival, he sent a blunt warning to King Anxi of Wei:
Mengchang Jun (Lord Mengchang), born Tian Wen, was a scion of the Qi royal house – the son of Tian Ying, himself a younger son of King Wei of Qi.