Some youngsters are pursuing a dream of stardom on the street of Beijing Carrying a guitar and a hefty loudspeaker,Mumu(whose real name is Li Zhengwen) can be seen walking on the streets and through the alleyways of Beijing,an unfamiliar city to this Some youngsters are pursuing a dream of stardom on the street of Beijing Carrying a guitar and a hefty loudspeaker, Mumu (whose real name is Li Zhengwen) can be seen walking on the streets and through the alleyways of Beijing, an unfamiliar city to this