Is “In the Battle of Fancheng, his seven armies were flooded and he surrendered to Guan Yu” true?
attested in history
According to Records of the Three Kingdoms, Book of Wei, Biography of Yu Jin, Guan Yu took advantage of the rising Han River to capture Yu Jin alive, who begged for mercy and was imprisoned; later he was returned to Wei and died of illness.
Yu Jin
A famous Wei general in official history, known for strict military discipline but failing to maintain his honor in later years.