Fan Jian had learned about Fan Xian's past in Joy of Life. The Qing Emperor, Fan Jian, and Chen Pingping all knew Fan Xian's true identity. Fan Jian had even met Fan Xian at the Qing Temple and arranged Lin Wan 'er's marriage to him. Fan Jian and Chen Pingping also sent Fei Jie to teach Fan Xian how to recognize and use poison and martial arts. Thus, Fan Jian knew Fan Xian's true identity.

In Joy of Life2, Fan Xian saw through the past of the great grandmaster Fan Jian. According to the ending of the first season, Fan Xian had been framed by the Second Prince and accused of treason. However, all of this was a scheme that Fan Xian and Yan Bingyun had planned in advance. They had used Zhuang Mohan's last words and Haitang Duoduo's message to create the illusion that Fan Xian had been killed. Fan Xian's goal was to sneak into the Second Prince's camp and obtain more information to pave the way for his revenge. Thus, Fan Xian had seen through Grandmaster Fan Jian's past through this scheme.
In Joy of Life2, Fan Xian saw through the past of the great grandmaster Fan Jian. The specific details and background story needed to be understood by watching the series.
Fan Xian had successfully made Fan Ruoruo become Great Grandmaster Ku He's disciple by creating an illusion, thus revealing that Great Grandmasters were really easy to deceive. Fan Xian had helped Fan Ruoruo because Great Grandmaster Ku He's mysterious style of doing things allowed him to easily succeed. However, the search results did not mention Fan Xian's past of seeing through Great Grandmaster Fan Jian, so there was no way to get a definite answer.
In Joy of Life2, Fan Xian saw through Fan Jian's past as a Great Grandmaster. In the plot, Fan Xian revealed the fact that Fan Jian had killed the royal family and sacrificed his son for Ye Qingmei. This discovery shocked Fan Xian. The specific details and background story needed to be understood by watching the series.
In the play, Fan Xian saw through the past of Fan Jian.
There was no clear answer as to whether Fan Jian knew about Fan Xian's past. Some search results hinted that Fan Jian might know Fan Xian's true identity because Fan Jian was a very calm and responsible person. His attitude toward Fan Xian was different from his attitude toward illegitimate children. In addition, Fan Jian also showed respect when talking about Ye Qingmei, which was different from his attitude towards his wife. In addition, some of the Qing Emperor's actions also aroused Fan Xian's suspicion. For example, he insisted on marrying Princess Chen to Fan Xian and actively let Fan Xian take over the palace treasury. However, there was no clear evidence that Fan Jian knew Fan Xian's true identity. Therefore, based on the information provided, it was impossible to determine whether Fan Jian knew about Fan Xian's past.
Fan Xian's father was Fan Jian. Fan Jian was the supporting actor in " Joy of Life " and also Fan Xian's adoptive father. He had deep feelings for Fan Xian's mother, Ye Qingmei, so he adopted Fan Xian. Fan Jian had always had a crush on Ye Qingmei and treated Fan Xian as his own child. In order to protect Fan Xian, he did not hesitate to use his own son to replace Fan Xian's identity. In order to protect Fan Xian, Fan Jian took him back to the capital and arranged for him to marry Lin Wan 'er. In the end, Fan Jian resigned and returned to his hometown, living a stable life with Fan Xian.
Fan Jian was Fan Xian's adoptive father in the TV series " Joy of Life." He was a serious and intelligent character. In order to save Ye Qingmei's son, Fan Xian, Fan Jian did not hesitate to use his own son to replace Fan Xian's identity and let Fan Xian escape danger. Fan Jian also placed Fan Xian at the old lady's side in Danzhou to protect him. Fan Jian had always silently protected Fan Xian and hoped that he could inherit the royal palace treasury. Fan Jian eventually had a happy family, including a daughter and a son. Fan Jian was a good man. He had sacrificed a lot to protect Fan Xian.
Fan Xian was the male lead in the TV series " Joy of Life," and Fan Jian was Fan Xian's adoptive father. Fan Jian was originally the assistant minister of the Ministry of Revenue and later promoted to the minister of the Ministry of Revenue. He was Ye Qingmei's old friend and Fan Xian's adoptive father. In order to save Ye Qingmei's son, Fan Xian, Fan Jian did not hesitate to use his own son as a scapegoat, allowing Fan Xian to escape danger. Fan Jian also raised Fan Xian by the old lady's side in Danzhou, allowing him to grow up safely. Fan Jian strongly wanted Fan Xian to marry the princess and take over the power of the palace treasury. In the play, Fan Jian's love for Fan Xian had always been there. Although it was not obvious, it had always been silently protecting him. Fan Jian's ending was to resign and return to his hometown, while Fan Xian retreated behind the scenes to become the most powerful figure in the world. The story of Fan Jian and Fan Xian showed the wisdom of the Fan family and the protection of the family.
Fan Xian was the male lead in the TV series "Joy of Life," played by Zhang Ruoyun. He was an orphan of the previous dynasty, the son of Ye Qingmei and the Qing Emperor. He was later adopted by Minister Fan Jian. Fan Xian had a handsome appearance and did not show his joy or anger on his face. He had hidden his peerless martial arts and valued emotions and righteousness. He had experienced the trials and tempering of his family, Jianghu, and the court, and finally returned to Jiangnan after his success. Fan Jian was Fan Xian's adoptive father and the Minister of Revenue of the Qing Kingdom. He had always been silently protecting Fan Xian behind his back, hoping that he would inherit the royal palace treasury. Fan Jian had followed the Qing Emperor when he was young and was an old friend of Ye Qingmei. In order to save Ye Qingmei's son, Fan Xian, he did not hesitate to use his own son to replace Fan Xian's identity. Fan Jian also brought Fan Xian back to the capital and arranged for him to marry Lin Wan 'er. In the end, Fan Jian resigned and returned to his hometown, living a stable life with Fan Xian.