Rm Yang Se-chan's stomach makes people laugh. Which question is the challenge?

Rm Yang Se-chan's challenge to draw a smile on his stomach is 20 19 1020, a Korean running man's smile-suppressing challenge. According to the relevant information inquired, rm Yang Se-chan's smile suppression challenge is Korean Running Man 20 19 1020. The challenge of Korean Running Man to suppress laughter is the 20th191020 issue of Korean outdoor reality show Running Man. Main members of Runningman: Yu Jae Seok, Song Ji Hyo, Lee Kwang Soo, Kim Jong Kook, Seok-Jin Jee, Haha, Quan Sumin and Yang Se-chan. The program "Running Man" always finds the audience's jokes, so it is deeply loved by the audience.