Ku He pursued Fan Xian.

Ku He did not know Fan Xian's true background. Even though 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 had no motive or action to pursue Fan Xian.

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 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.

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 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. 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. 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 recover his martial arts at a critical moment. Fan Xian became Ku He's disciple, and the two established a deep master-disciple relationship.

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.

The exact number of episodes in which Ku He and Fan Xian met during the Qing years was not explicitly mentioned. However, according to the information in the search results, Ku He and Fan Xian had indeed met. 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's attitude toward Fan Xian was complicated and subtle. At first, Ku He did not have any special emotional connection to Fan Xian. He only knew that he was the Commissioner of the Qing Overwatch Council and maintained a certain level of vigilance and respect for him. However, when Ku He learned that Fan Xian was Ye Qingmei's son, he developed a strong interest and love for Fan Xian. Thus, although the exact number of episodes where they met was not mentioned, Ku He and Fan Xian had indeed met before.