I was walking through a Chinese marketplace one day when I saw

a very strange sight. A man was crouched behind a woman who was paying for some dumplings. His arms were stretched out and it seemed that he planned to surprise her when she turned around. I asked my friends if the man was a robber and they said yes but that we should be quiet and wait to see what would happen. I did not want the man to rob the lady so I yelled and he quickly ran away when the lady turned around.
My friends told me that I made a mistake because the robber could have tried to hurt me. I disagreed. It was better to help the lady even if it was dangerous for me.