There were many enlightening lines in Chang 'an Twelve Hours. The following was one of them: Although the world was big, it was not as big as a person's heart. This sentence expressed the power and importance of people in the depths of our hearts. It tells us that no matter what difficulties and challenges we face, as long as we have a firm belief and persistent pursuit, we can surpass ourselves and create our own miracles. This sentence also enlightens us that we should pay attention to the inner strength on the road of life, not to be influenced by external pressure and temptation, to strengthen our beliefs and pursue our dreams.