People really aren't taking care of themselves. The temperature difference between day and night is huge right now, and it's easy to catch something if you're not careful. This is especially true for those who frequent street food stalls; they have a few drinks, get all warmed up, and then what happens when a cool breeze blows by? Some just can't handle it. The incidence of these kinds of colds, often brought on by wind and chill, is genuinely high, not much less than the flu in winter.
Besides, young people these days are quite fashion-conscious. This is the season for short sleeves during the day and long sleeves at night. But they tend to wear short sleeves all the time.
"Everyone, be careful! If you're working late, put on an extra layer. Let's not catch colds," Liu Banxia called out.
"Thank you, Teacher Liu!" everyone responded in unison.
