Wikipedia definition
1. Cao ChongCao Chong (196–208) was a son of the late Han Dynasty warlord Cao Cao. He was renowned as a child prodigy, having the intelligence of an adult at the age of five. He is best known for his ingenious method of weighing an elephant using the principle of buoyancy. Considered by Cao Cao as the successor, however Cao Chong died of sickness at a young age.
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