The MBC entertainment program 'Infinite Challenge' member Park Myung Soo fooled Jung Joon Ha, the second member to fool him after Haha.

On the recent episode of the MBC entertainment program 'Infinite Challenge,' which aired on Jan. 23, 2016, the 'Infinite Challenge' members wrote letters to one another. In the letters, the members described the things they wished they would see the recipient would carry out throughout the year. Later, the members played the game of hiding their mailbox from the rest of the members.

Haha and Yoo Jae Suk visited Jung Joon Ha at the gym where he had his mailbox. The two men persuaded Jung Joon Ha to go get something to eat. As they were leaving the gym, Park Myung Soo, who was disguised as a cameraman, entered the gym to put his letter in Jung Joon Ha's mailbox.

Haha told one of the staff members that the cameraman was Park Myung Soo, but he did not tell Jung Joon Ha. In related news, on last weekend's episode of the MBC entertainment program 'Infinite Challenge,' the members traveled to the city of Hwa Sung and parodied the sci-fci Hollywood movie 'Martian.' They pretended as if they were in Mars, and later they found out that they would actually go to the universe with the help of Russian astronauts.