This is the story of Su Ran, a time traveler who became a wall-facer during the Three-Body Crisis. In the tense and dignified hall of the United Nations Headquarters, Su Ran gathered with other wall-facers. They talked about the despairing technological level of the Trisolarans. From the sophon technology that can control protons to expand two-dimensionally and etch circuits, to the fleet technology that can sail at one percent of the speed of light, the Trisolarans' technology is like an insurmountable mountain that stands in front of mankind. However, as a time traveler, Su Ran has knowledge that transcends the times. With a firm belief and sense of mission, he accepted this arduous task. He is determined to use his unique advantages under numerous crises and surveillance to break through the Trisolaran blockade, find a way to fight against the Trisolarans, and become the light of hope for mankind in this cruel war. At this moment that determines the life and death of mankind, he wants to cut through the darkness like lightning and open up the road to vitality for mankind.
