A Shaanxi woman may have proved to all her restaurant coworkers Wednesday that looks could be deceiving.

A month after working in the restaurant and pretending to me a man, Gao Linsen shocked her colleagues when she delivered a baby boy in the eatery's bathroom.

"I could not believe my eyes when I saw Gao deliver a baby," said Zhang, the first employee to witness the scene.

She often wore men's clothing and even told people she was a man. No one suspected she was a woman until the baby was born.

Gao Linsen is a man's name, police said. They said she has refused to give them her real identity, where she came from or who the father is.