Who are tramps and monkeys?

These are two combination names from My Goddess in Thriller Games. The tramp refers to Bai Liu, and the monkey refers to the four cities of animal husbandry. Mu Sicheng is human, but the game in the novel is set as a thief, and he often wears monkey headphones, so he is nicknamed monkey. The nickname "Monkey" was given by the character Bai Liu in the novel, including the nickname "Wanderer and Monkey"! Muck is a member of Bai Liu's team.