It was 2013 and I was informed to executive the No.549503 train. When we were reaching Xiangfang Station, I started air brake. The train was slowing down. Suddenly, a man ran into my way. I had to whistle. The man, However, didn't Plan to leave. I applied the emergenc brake. About a minute later, my train stopped. I noticed the man crying. So I called the police. Later, I learnt the man was about to commit suicide. Wow, how low the man was.