Xiaohei 999 and Xiaohong 666

Once upon a time, there were two brothers who were both painters. The elder brother made many black lacquer figurines, and the younger brother made many red lacquer figurines. One night, the little black man Xiaohei 999 accidentally jumped to the red country while playing jumping, and became good friends with Xiaohong 666. When they parted, Xiaohong 666 kissed Xiaohei 999. Oh my gosh! A red lip mark was left on Xiao Hei 999's forehead, and Xiao Hong 666's lips turned black, and they couldn't be removed no matter how hard they washed or wiped...