'Produce X 101' has revealed more photos of the trainees who have succeeded with their hidden box missions!

The hidden box mission is a way for fans to see more of their favorite trainees. It involves trainees sticking their hands into a blind box in an attempt to guess what they're touching. Previous years have included slimy items such as eels and octopus, but also everyday items such as sponges.

Check out the trainees below that managed to guess within a minute.

Kim Sung Hyun (Stone Music)

Nam Dong Hyun (The South)

Lee Ha Min (Individual)

Wang Gun Ho (YG)

Nam Do Hyun (MBK)

Yoon Hyun Jo (Gost)

Lee Won Jun (E Entertainment)

Yoon Min Guk (Source Music)

Kwon Hee Jun (Creker)

Hong Sung Hyun (Urban Works)

Kim Woo Seok (TOP Media) [*UP10TION's Wooshin]