Is “The white-clothed river crossing to attack Jingzhou and capture Guan Yu alive” true?
attested in history
The 'Records of the Three Kingdoms, Book of Wu, Biography of Lü Meng' records that Lü Meng devised the plan of crossing the river in white clothes to attack Jingzhou's beacon towers, captured Nanjun, and eventually captured Guan Yu and his son.
Lu Meng
In official history, he was a Wu general known for his diligence and the white-clothed river crossing, but in the novel, he is depicted as dying after being possessed by Guan Yu's spirit.