Underground voices (5)

He also bought a new guitar for nearly 2,000 yuan. He says he'll make music as long as he has his guitar.

Shouting above the roar of an oncoming train on the platform, Xu explains that his ultimate dream is to become a music producer. He then steps into the train, and starts plucking his guitar and singing his heart out.

Many Chinese with musical talent dream of one day becoming professional singers. They're inspired by the success stories of singers like Ren Yueli, who's nicknamed Xidan girl because she has been singing in the tunnels of Beijing's Xidan commercial area since 2008.

In 2011, she performed at the national Spring Festival Gala.