In which episode of The Fairy Couple, Yong Dong knows the identities of the seven fairies?

The story is as follows: The Seven Fairys had to accept their father's imperial edict, bid farewell to Yong Dong sadly, and left the golden hairpin to Yong Dong. Yong Dong was so sad that he struggled so hard that he fell into a coma. The seven fairies died with King Tota reluctantly. Seven fairies were arrested in heaven and put into a dungeon. The Queen Mother and other fairies came to visit and tried to rescue them. Due to the excessive yearning for the Seven Fairies, Yong Dong became an anthomaniac. Qiaozui Zhang came to visit Yong Dong, who was delirious. He was mistaken for the Seven Fairys. He enjoyed Yong Dong's tenderness and love for his wife, and was immersed in happiness he had never had before. Yong Dong was sad to find that Qiaozui Zhang's abdomen was flat, not his pregnant wife. The fortune teller said that Fu was the top scholar and took the opportunity to send Fu back to Beijing to catch up with Dong Yongchang.

"A Fairy Match" is a folk myth costume TV series jointly shot by China CCTV International Television Company and Anqing TV Station in 2007. The film is directed by Wu Jiawei and co-starred by Eva Huang and Andy. The play is adapted from some stories in Jie's novel The True Story of the Seven Fairies and the folklore The Fairy Couple. It tells the love story between the seven fairies and Yong Dong.