article_snippet.sent: Ms Cao said: 'I couldn't just let the man hurt innocent people.'
article_snippet.sent: Ms Cao added in an interview with a local television station: 'I was trying to take over a machete and stall a machete until another officer came to help me. '
article_snippet.sent: the man is thought to have robbed a passer-by when Ms Cao saw the man.
article_snippet.sent: Jiao Chun, one of the policemen who arrived on the scene, said: 'Our colleagues asked Ms Cao to drop Ms Cao but Ms Cao didn't.
article_snippet.sent: Ms Cao kept saying that Ms Cao wanted to rob someone for more money.'