Kang Chun isn't even shown after the timeskip. The timeskip happens right after Lee Hoguk is punched through the wall. We don't see Ha Jung-woo right after he punches Lee Hoguk.
@Siikalahna It is really a tie skip. When both the kid and his servant arrive and yell "Dad!" and "Master!", That is the last of what you could say as childhood of the MC. And after that, the two scenes of the HOLE in the WALL, that's where the time changes, as you can notice that color change from black and white to colorful. and as for your question,
i-
like i thought that the two scenes were connected and i was like,,, did he just gr o w
i also can't believe it's been ten years and they haven't bothered to patch up the hole in the wall