"When people reach middle age, they have to soak Lycium barbarum in a thermos cup" means that when people reach middle age, most people will have different degrees of necessity, both physically and economically. On the one hand, when people reach middle age, various organs of the body have gradually begun to decline. On the other hand, with the development of society and the progress of the times, people pay more and more attention to health preservation, so more and more people soak Lycium barbarum in thermos cups at street corners, office pantries and fields.

Later, it was used to tease young people but did what middle-aged people like to do. This sentence has become the mantra of many people. While teasing each other, it shows that everyone is paying more and more attention to their health.