. . . The army rebelled in Mangdang Mountain and personally killed a big white snake on the mountain. This is the long-standing folk story of "Gao Zu beheaded the snake". Legend has it that after Liu Bang beheaded the great white snake, an old woman came to the mountain with tears, saying that her son was the son of Bai Di and turned into a white snake to play on the mountain. She was killed by Chi Di's son. She was very sad. After that, the old woman suddenly disappeared. This story means that the then Qin Dynasty will be replaced by a new dynasty. After killing the white snake, Liu Bang claimed to be the son of Chi Di, and he especially liked red, even the flag of the army was changed to red.
Xiang Yu likes black. All the clothes he wears are black, even the birds and horses he rides are black. The "red handsome black general" probably came from this.
By the way, at the beginning of chess, there was a folk proverb that has been circulated for many generations: "The red is black first, and the loser doesn't stink." There is also a cultural background. Also from the Chu-Han War. In 205 BC, Han soldiers took the lead in attacking Chu, which opened the prelude of "the Central Plains competing for deer", resulting in the confrontation between the red and black armies in Guangwu Mountain. When Chu and Han met, it was the Han soldiers who took the lead in attacking and finally wiped out the Chu army, leaving an extremely heroic and important scene for history. Therefore, reflected in the chess game, the proverb "red first, then black" has been formed.