The breakfast was as lively as usual. Uncle Li had outdone himself again with a wide spread of dishes. Leng Pan looked at all this food and thought of the situation described in the book where people would start to starve as early as a week after the start of the apocalypse because they had not stockpiled supplies.
With many people depending on food delivery and only buying a few things like snacks and instant noodles to eat when they are too hungry and their delivery is late, buying supplies in bulk was left to the elderly.
The older generation had weathered many storms and gained foresight. They tend to buy things that would last them longer. First, because buying in bulk is cheaper than buying a few pieces of anything.
Second, because they had experienced some state of emergencies caused mostly by pandemics, requiring them to stay indoors for long periods of time.