Lee Seung GI and Ahn Jae Hyun worked together in the drama "You're All Surrounded." Now Ahn will replace his former co-star on the variety show "New Journey To The West."

In this travel reality show each of the four cast members takes a character from the classic Chinese novel "Journey to the West" and personifies that character on a five-day backpacking trip that invovles playing games.

Lee Seung Gi appeared in the first season of the show, playing the Buddhist monk of the novel. He traveled along with his former "2 Days, 1 Night" co-stars Kang Ho Dong, Eun Ji Won and Lee Soo Geun. The cast traveled to China for the first season and the show was a success, gaining 10 million views the first week on a Chinese video site.

The cast will return to China for the second season, only Lee Seung Gi will not travel with them. He began serving his two-year mandatory duty on February 1.

The second season of "New Journey to the West" is already in production. Kang Ho Dong, Lee Soo Geun and Eun Ji Won traveled to China on February 18. Ahn Jae Hyun followed a day later with producer-director Na Young Suk, who was previously responsible for producing "2 Days, 1 Night."

Ahn Jae Hyun's recent drama roles include playing a vampire doctor in "Blood," which co-starred Gu Hye Sun, and playing a rookie cop on "You're All Surrounded." He also recently appeared in the drama "Snow Lotus" and in the Chinese romantic comedy film "Wedding Bible." He won a New Star award for his role in the drama "You Who Came From The Stars."

The model-turned actor also has plenty of variety show experience. He's been a guest on "Happy Together" and "Korea's Next Top Model," as well as a host on "M! Countdown."

"New Journey to the West" will be his first travel reality show.