I remember watching a video of him talking about in YSMM years ago. Time passes by really fast.

Heechul has mentioned his past experience as a factory line worker several times on many different shows. What I loved about this scene was that on his own, Heechul noticed the man was flustered when BJW started asking him questions (he was surprised to even see them) and how he was having trouble formulating answers and working at the same time. Rather than forcing them to turn off the machine and interrupting the busy workflow, Heechul just jumped in and told the man he'd take over while he talked and to put the man at ease, he explained his past experience and quickly demonstrated that he could do it properly (and quickly). Heechul must have packed at least 15-20 boxes while still contributing to the conversation and the workflow was never disrupted. People should buy oyster mushrooms. They might have been packed by an idol. ><