The world is beautiful, but please beware: beneath the appearance of social harmony, there are many ugly realities. Innocent children and weak women were deceived, trafficked, and abused, either by strangers or by relatives and friends. What makes human nature so ugly is interest and twisted desire, which weaves a huge net in the darkness of society. Your ignorance, or even your kindness, if you are not careful, you will fall into the net and you will no longer be able to live like a human being.