Ku He knew of Fan Xian's background.

In Joy of Life, Ku He did not know Fan Xian's background. Although Ku He had deduced that Fan Xian was Ye Qingmei's son through his battle with Fan Xian and the little order he had recited in the tavern, he did not trust Fan Xian and had even given him a fake Tianyi Dao secret manual. Thus, Ku He did not know Fan Xian's true background.

In Joy of Life, Ku He did not know Fan Xian's background. Even though Ku He had learned from Sigu Jian that Fan Xian was Ye Qingmei's son after his battle with Fan Xian, Ku He had not known Fan Xian's background from the start.

Ku He did not know of Fan Xian's background in the years of Qing. Although Ku He was one of the Four Great Grandmasters, he and Fan Xian had separated after meeting at the Temple. He had never seen Ye Qingmei. Ku He had learned from Sigu Jian that Fan Xian was Ye Qingmei's son through his battle with Fan Xian. Thus, Ku He did not know Fan Xian's background at the beginning.

In Joy of Life, Ku He did not know Fan Xian's background. Even though he had deduced that Fan Xian was Ye Qingmei's son through his battle with Fan Xian and the little order Fan Xian had recited in the tavern, he did not trust Fan Xian and had even given him a fake Tianyi Dao secret manual. Thus, Ku He did not know Fan Xian's true background.

At the beginning of Joy of Life, Ku He didn't know about Fan Xian's background. He had learned from Sigu Jian that Fan Xian was Ye Qingmei's son after his battle with Fan Xian. Thus, Ku He did not know Fan Xian's background at the beginning.

In Joy of Life, Ku He did not know Fan Xian's background. Even though he had deduced that Fan Xian was Ye Qingmei's son through his battle with Fan Xian and the little order Fan Xian had recited in the tavern, he did not trust Fan Xian and had even given him a fake Tianyi Dao secret manual. Thus, Ku He did not know Fan Xian's true background.

Ku He did not know Fan Xian's background in " Celebrating Years." Fan Xian's identity had first been caused by Wu Zhu and Ku He's fight. Through Wu Zhu's background and the little orders Fan Xian recited in the tavern, Ku He had deduced that Fan Xian's identity was Ye Qingmei's son. However, Ku He did not trust Fan Xian and even gave him a fake Tianyi Dao secret manual. Thus, Ku He did not know Fan Xian's true background.

Ku He helped Fan Xian because he was Ye Qingmei's son. Ku He respected Ye Qingmei very much and regarded her and the temple as gods. When Ku He learned of Fan Xian's true identity, he developed a strong interest and love for Fan Xian. Ku He chose to pass on a portion of his martial arts heritage to Fan Xian and help him fight against a common enemy at a critical moment. Ku He's attitude toward Fan Xian changed from the initial vigilance and respect to the support and protection he saw Fan Xian as family. His actions were not only out of nostalgia for Ye Qingmei, but also because he saw Fan Xian's potential and responsibility. Thus, Ku He helped Fan Xian because of his feelings for Ye Qingmei and his approval of Fan Xian.

Ku He was Fan Xian's master, and Fan Xian became Ku He's last disciple. Ku He knew Fan Xian's identity very well. He knew he was Ye Qingmei's son. Ku He had played an important role in Fan Xian's growth. He taught Fan Xian Tianyi Dao and Western magic. Ku He helped Fan Xian because he was Ye Qingmei's son. Ku He respected Ye Qingmei very much and regarded Ye Qingmei and the Temple as gods. When Ku He learned of Fan Xian's true identity, he developed a strong interest and love for Fan Xian. Ku He chose to pass on a portion of his martial arts heritage to Fan Xian and help him fight against a common enemy at a critical moment. Ku He's attitude gradually changed. He saw Fan Xian as family and was willing to give him support and protection. Thus, Ku He helped Fan Xian.

Ku He was Fan Xian's master, and Fan Xian became Ku He's last disciple. Ku He knew Fan Xian's identity very well. He knew he was Ye Qingmei's son. Ku He had played an important role in Fan Xian's growth. He taught Fan Xian Tianyi Dao and Western magic. Ku He helped Fan Xian because he was Ye Qingmei's son.