There are five brothers in the country. They look alike, and their names are all Mu. The boss is withdrawn and likes to appear at night. What is this word?

Wen Zi Village has six brothers. The eldest is Mu, the second is Mu, and the third is Mu. The fourth, fifth and sixth are the tomb, the mo and the tomb respectively. They look so alike that people often regard the boss as the second child and the third as the fifth, making many jokes. Once, the Ci Theater held a cultural performance, and the leader sent Xiao Hu to invite the second child to "screen" the staff at this stage. Xiao Hu saw Liu's "grave" and thought he was the second child, so he invited him in. Lao Liu likes to deal with the earth. As soon as we arrived at the theater, we piled graves, scaring away the audience, and of course the performance was ruined. Another time, an old painter wanted to recruit an apprentice to inherit his career. Knowing that he is diligent and studious, he sent someone to send a notice. The messenger sent the notice to the third "Mu" by mistake. The third child is very introverted and taciturn. Much as he admired the old painter, he said nothing and seldom wrote. Of course, the old painter accepted such an apprentice and did not realize his wish. This kind of thing happens from time to time, which makes people feel sad. How can I not admit my mistake, six brothers? Little rabbit Tao Tao came up with a good idea. He said: "The six brothers are similar in appearance but different in personality. As long as we find out their temper, there will be no mistakes. " Boss-fund-raising, very active, willing to contribute, like to collect property; The second child, the curtain, is gentle and motionless, but works hard for the performance, and is an unknown hero; The third child, Mu, is introverted and taciturn, and often admires others from the heart. Old four-dusk, withdrawn, likes to appear in the evening; Fifth-copying, loving learning and imitating is a kind of diligence.