https://youtu.be/zr1axMq7cwY?si=537hogveex4hWL54 Not a commercial YouTuber or a bicycle business YouTuber, but rather an elderly hobby YouTube channel, it seems. It's about a person who started in Cheongnyangri 44 years ago and just filmed the journey back to Busan (even at that time, it was a steel bicycle). The photos are interesting, so I'm posting the URL. Haha, even looking at it makes me laugh haha.