Minister Lin knew that Lin Gong was Fan Xian.

Lin Wan 'er had learned the truth of Lin Gong's death by Wu Zhu in the novel " Celebrating Years " and the television series. She also knew that it was the work of Fan Xian's closest uncle, Wu Zhu. She then decided to join forces with the Qing Emperor to set up a trap to kill Wu Zhu, but Fan Xian stopped her in time. Thus, Lin Wan 'er knew that Lin Gong was Fan Xian.

Minister Lin knew that Lin Gong was related to Fan Xian. Minister Lin suspected that Fan Xian was the murderer of Lin Gong and sent people to interrogate Fan Xian's friend, Teng Zijing. In the end, Minister Lin chose to believe in Fan Xian and support him with all his might. He believed Fan Xian was the best candidate to inherit the Lin family's legacy. The reason Minister Lin chose to believe Fan Xian was probably because there was no evidence to prove that Fan Xian was the murderer. Moreover, Fan Xian was also his future son-in-law, equivalent to half his son. Thus, Minister Lin chose to give up avenging his son. Instead, he recognized Fan Xian and hoped that he could inherit the responsibility of the Lin family.

In " Celebrating Years," Prime Minister Lin finally chose to believe Fan Xian because he was certain that Lin Gong's death had nothing to do with Fan Xian. Prime Minister Lin had initially suspected Fan Xian of being the murderer of his son because Fan Xian was Lin Gong's good friend. After Lin Gong was killed, Fan Xian had taken revenge for his good friend. However, after many probing and observations, Minister Lin began to trust Fan Xian. When he saw Fan Xian talking to Dabao and saw Fan Xian's long-lost sincerity, he also began to suspect that his guesses and suspicions might be wrong. In addition, Lin Gong's death also provided a reason for the Qing Emperor to go to war with Northern Qi. This also made Minister Lin believe Fan Xian. In short, Minister Lin chose to believe Fan Xian based on his probing and observation of Fan Xian, as well as the circumstances after Lin Gong's death.

Minister Lin knew that Lin Gong was related to Fan Xian. Minister Lin suspected that Fan Xian was the murderer of Lin Gong and sent people to interrogate Fan Xian's friend, Teng Zijing. In the end, Minister Lin chose to believe in Fan Xian and support him with all his might. He believed Fan Xian was the best candidate to inherit the Lin family's legacy. The reason Minister Lin chose to believe Fan Xian was probably because there was no concrete evidence to prove Fan Xian's relationship with Lin Gong. Furthermore, Fan Xian was his future son-in-law. He chose to give up avenging his son. Instead, he acknowledged Fan Xian as his son-in-law and could replace Lin Gong in inheriting the responsibility of the family.

Minister Lin knew that Lin Gong was related to Fan Xian. Minister Lin suspected that Fan Xian was the murderer of Lin Gong and sent people to interrogate Fan Xian's friend, Teng Zijing. In the end, Minister Lin chose to believe in Fan Xian and support him with all his might. He believed Fan Xian was the best candidate to inherit the Lin family's legacy. The reason Minister Lin chose to believe Fan Xian was probably because there was no concrete evidence to prove Fan Xian's relationship with Lin Gong. Furthermore, Fan Xian was his future son-in-law. He chose to give up avenging his son. Instead, he acknowledged Fan Xian as his son-in-law and could replace Lin Gong in inheriting the responsibility of the family.

Minister Lin knew that Lin Gong was related to Fan Xian. Minister Lin suspected that Fan Xian was the murderer of Lin Gong and sent people to interrogate Fan Xian's friend, Teng Zijing. In the end, Minister Lin chose to believe in Fan Xian and support him with all his might. He believed Fan Xian was the best candidate to inherit the Lin family's legacy. The reason Minister Lin chose to believe Fan Xian was probably because there was no concrete evidence to prove Fan Xian's relationship with Lin Gong. Furthermore, Fan Xian was his future son-in-law. He chose to give up avenging his son. Instead, he acknowledged Fan Xian as his son-in-law and could replace Lin Gong in inheriting the responsibility of the family.

Minister Lin knew that Lin Gong was related to Fan Xian. Minister Lin suspected that Fan Xian was the murderer of Lin Gong and sent people to interrogate Fan Xian's friend, Teng Zijing. In the end, Minister Lin chose to believe in Fan Xian and support him with all his might. He believed Fan Xian was the best candidate to inherit the Lin family's legacy. The reason Minister Lin chose to believe Fan Xian was probably because there was no concrete evidence to prove Fan Xian's relationship with Lin Gong. Furthermore, Fan Xian was his future son-in-law. He chose to give up avenging his son. Instead, he acknowledged Fan Xian as his son-in-law and could replace Lin Gong in inheriting the responsibility of the family.

Minister Lin knew that Fan Xian had killed Lin Gong. In the 19th episode of " Celebrating Years," Minister Lin told Fan Xian that Lin Gong was the mastermind behind the Niulan Street assassination and tested Fan Xian's attitude toward the Lin family. Fan Xian pretended not to know about this and didn't understand why Lin Gong wanted to kill him, but Minister Lin felt that Fan Xian's reaction was not fake. Thus, Minister Lin knew that Fan Xian had killed Lin Gong.

Yes, Lin Wan 'er knew that Lin Gong was Fan Xian. In " Celebrating Years," after Lin Wan 'er learned the truth that Lin Gong had been killed by Wu Zhu, she decided to work with the Qing Emperor to set up a trap to kill Wu Zhu. However, Fan Xian stopped her in time. The specific details and plot description were not provided.

During the celebration, Lin Wan 'er knew that Lin Gong was Fan Xian. In the novel and the television series, Lin Wan 'er learned the truth of how Lin Gong had been killed by Wu Zhu. She also knew that this was the work of Fan Xian's closest uncle, Wu Zhu. Lin Wan 'er then decided to join forces with the Qing Emperor to set up a trap to kill Wu Zhu, but Fan Xian stopped her in time. The specific details and plot descriptions may require further reading or watching related works to obtain more information.