In the BTS video released of his drama:

• “Blow Breeze”, Hojun does MJ’s moonwalk – who taught him? Yunho?

When Jang-g0 (Son Ho Jun’s Character) does the moonwalk and is complimented, he says, it is because when he was in the army, he had a junior called Jung Yunho who taught him well. His mention of TVXQ’s U-Know Yunho who in he is close to normally and who dances well in real-life, aroused laughter.

The caption of yunho with his shaven head (above the line about jang-go’s army junior): are you talking about me?

and the making video can be watched on naver tvcast here~

—————————

Credits:

imbc,
Translated by @snxy: 1 and 2,
Shared by TVXQ! Express