The MBC entertainment program 'Infinite Challenge' member Jung Joon Ha delivered his letter to Park Myung Soo.

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.

Jung Joon Ha, who had written to Park Myung Soo, went on top of a tall building where Park Myung Soo had installed his mailbox. Jung Joon Ha was so scared of height, but he managed to deliver the letter to Park Myung Soo. 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.

The MBC entertainment program 'Infinite Challenge' is one of the popular, long lasting entertainment programs in Korea. It features the Infinite Challenge members Ha Ha, Park Myung Soo, Kwanghee, Yoo Jae Suk and Jung Joon Ha.