青楼已满座谁还懂寂寞
[qīng lóu yĭ măn zuò shéi hái dŏng jì mò]
'All seats in the green building are taken, who understands loneliness?' Here, 'Green Building' refers to an entertainment place historically where courtesans served. This nickname might imply a feeling of loneliness amid crowd or bustling environment.