An undated photo shows that Sun Jinzhi changes her poses on the bike. With a bicycle, Sun, a lady in her 50s, has tried hard to find her son, who has never come back home since seven years ago at an age of 27. In order to find him back, Sun insists in practicing trick-cycling every day early in the morning to participate in The Dream of China, which means that her son can see her on the screen. It has been her most earnest dream to hear from her lost son. [Photo/CFP]