Explanation: soap: black. Green, red, black and white. Metaphors are right and wrong or reasons, context, right and wrong. Source: Ming Anonymous "Liangshan Seven Tigers Make a Copper Platform": "No matter whether he is indiscriminate, left and right! Let's slap a flail and send him to prison. " Example: Cao Qingxue Qin's Dream of Red Mansions, Chapter 34: "Mom and Brother, don't shout, there will be chaos as soon as you stop." Ai Wu The Journey to the West: "Scratching hair, scratching beard, indiscriminate." Synonyms: right and wrong, black and white antonyms: right and wrong grammar: union; Become an object; He hit me indiscriminately. Green and red, soap and white, yellow and blue are complementary colors and opposite colors.