It’s not unusual at all to see kids of this age working a cash register or handling customers in China. Blew me away the first time a little 8 yo girl scanned my item, took my money, and handed me my change and receipt in a store. Her mom, presumably, was somewhere nearby.
There’s a Japanese express restaurant near me where the entire family is present.
The kids have a table off to the side an do homework then fart around on tablet games.
If it’s busy the oldest kid, maybe 8 years, runs the cash register.
A generation ago, Italian-American artisans apprenticed their children very young — 7 or 8 — they learned building trades, stonecutting, tile setting, carpentry, masonry, and joinery, as well as butchering, fishmongering, cheese or wine making, tailoring, shoemaking, glove and leather goods making or repair — often the men who learned these skills in childhood had the best skills in adulthood because they literally grew their muscles into them.