Girl group Rainbow member Jae Kyung will be joining the other girls for the SBS program "Laws of the Jungle W."

Today on her me2day she wrote, "Jungle jungle Jungle the unknown world!!! I will do my best and come back!" along with a picture.

In the picture, Jae Kyung is holding a book about Papua New Guinea in one hand and making a fist in the other, showing her determination to do well on the show. She is reading the book to gain some background information before she leaves for the program.

"Laws of the Jungle W" is the female version of the show where female celebrities set off to the wilderness and try to survive without the help of anyone else.