Any emerging technology is impossible to be perfect, at the beginning of its birth. It may be bombarded with doubts coming from all directions. If a good technology is expected to go forward, people must open their hearts to respond to the doubts raised, and meanwhile, need to constantly solve the problems. Without doubt, the life of a new technology cannot be conceived. As professor Wang Xishan once said: "Our existing knowledge and experiences as well as the inertia thinking are often the biggest enemy of innovation, and also the grounds for disagreement with others".