Episode 12 recap: Wang Miao learned about a significant discovery.

Shi Qiang also learned about Ye Wenjie's past experiences and instructed Xu Bing Bing to continue investigating the matter. Standing on a platform, Chang Wei Si watched everyone busy but achieving nothing, and he didn't know what to say. Shi Qiang approached him, jokingly suggesting that he could join in on the frustrating game. Chang Wei Si had recently discovered that many high-level intellectuals in several regions were also playing the Three-Body game. 

This was a significant discovery, and he didn't understand why Shi Qiang was investigating Ye Wenjie's affairs. Initially, Shi Qiang had shown no interest in Ye Wenjie's matters, but later, he couldn't help but develop a strong interest in her. Yang Dong's suicide, her investigation into the boundaries of science, her contact with Shen Yu Fei, her involvement in researching the Three-Body game and cosmic twinkling phenomena—all these seemingly unrelated clues converged on one point. This was what he needed to investigate.

Furthermore, a portion of Ye Wenjie's file remained classified. Based on Chang Wei Si's investigation, it was discovered that Ye Wenjie had participated in a significant national defense project, with the application filed under Red Coast Base. In that base, there was an unprecedented and enormous antenna, which analysis indicated was used for information interference against Western countries. Before leaving, Shi Qiang reminded Chang Wei Si to assist him promptly in the investigation of Ye Wenjie's affairs.

At home, Wang Miao measured Dou Dou's height. Shi Qiang quickly called him and invited him out for a meal. As the food was served, Wang Miao promptly pulled Shi Qiang aside and asked him to accompany him to a particular place. They soon found Ye Wenjie's student, Sha Rui Shan, who proudly claimed to be the chosen one. He enthusiastically introduced the model he had created. Soon, Wang Miao and Sha Rui Shan got to the heart of the matter.

Mu Xing quickly arranged another meeting with Pan Han. She was still curious about how he obtained such important information and what he intended to do with it. After hearing Mu Xing's questions, Pan Han calmly replied that he wanted to reveal more truths to the public. However, Mu Xing hadn't finished reviewing the information, and she had no understanding of the significant environmental hazards caused by technology. She was concerned that the public might react negatively to the related reports. Pan Han insisted that people were opposed to the harm caused by technology, not technology itself. He intended to present the facts without forcing anyone to make choices or judgments.

Meanwhile, Wang Miao quickly immersed himself in the Three-Body game and noticed changes in the color of the soil and alterations in the composition due to the new climate conditions. Wang Miao responded to prompts from passersby and re-entered the tower to investigate. Inside, he discovered what appeared to be an observatory. Mo Zi warmly welcomed Wang Miao's arrival and prepared to show him the previous civilization they had visited. Civilization 137 of King Wen of Zhou had been restarted four times, with the shortest attempt only reaching halfway through the Stone Age. However, Civilization 139 had achieved a record by advancing to the steam age. On the other side, Shi Qiang quickly picked up Dou Dou after school. He had forgotten Wang Miao's instructions not to smoke in front of the child. Soon, Shi Qiang took Dou Dou to eat things that Wang Miao had forbidden. While sitting in the restaurant, he saw Mu Xing reporting on environmental pollution on the television, and Mu Xing ended the call abruptly.

Wang Miao returned to the Three-Body game, walking alongside Mo Zi. They witnessed various phenomena, and Mo Zi explained his theories, which were based on extensive observations rather than mysticism. Mo Zi vividly described the mysteries of the universe to Wang Miao. Shortly after, Sha Rui Shan called Xu Bing Bing, asking him to come to her place because he had made a significant discovery. Wang Miao and Mo Zi then watched the simulation of the universe, marveling at its exquisite nature. Through a telescope, Wang Miao made a major breakthrough. Civilization 141 had been destroyed in a raging fire, but its seeds remained, and it would be restarted.

Wang Miao returned to reality, where he discussed the significant discovery with Sha Rui Shan, Shi Qiang, and others. They realized that as long as they could predict the Stable Era, they could successfully complete the game. All Three-Body games predicted the Stable Era. During the time of King Wen of Zhou, divination was used to predict the Stable Era. Kong Zi used the laws of the universe, and Mo Zi used a massive model of the universe he had built. Wang Miao understood that everyone desired an accurate calendar that spanned thousands of years, but they had not succeeded because the world of Three-Body was different from the real world.

In the game, Mo Zi revealed a crucial piece of information to Wang Miao. During the time of Kong Zi, after the sudden extinguishing of the sun, a flying star appeared in the sky. If it was true, Wang Miao believed that there was only one possibility: after the sun went out, the star that had been obscured by the sun's rays became visible to everyone.