In the Lao Sun household, this was the situation—
Lao Sun's daughter-in-law sent her granddaughter to school every morning, and then joined a few aunties to participate in free "health care" projects.
She had maintained this hobby for many years, starting from the Sun God phase to later on with Quanjian, and now she was involved with something called Xiang Mei Zhi Nei.
Lao Sun went from initially indulging her hobbies, to gradually becoming vigilant, and then to letting things take their own course, all because no matter what Lao Sun's daughter-in-law did, she managed to be that miraculous woman who didn't spend a penny amongst thousands!
However, this led to her spending a lot of time on these activities, so the responsibility of buying groceries at home had been Lao Sun's for many years.