What does it mean to soak wolfberry in a thermos cup?

Soaking wolfberries in a thermos cup usually refers to health maintenance in middle age.

The complete meaning of this meme is "When middle-aged people have no choice but to soak wolfberry in a thermos cup." In addition to the "vacuum cup with wolfberry", there is also the "beer with wolfberry", which belongs to the contemporary Buddhist middle-aged people who commit suicide over and over again to maintain their health. "Applying eye cream while staying up late", "Eating too much while taking stomach and digestive tablets", etc.

Source

This meme first came out in 2017, from a Weibo post lamenting the time and making fun of Black Panther drummer Zhao Mingyi, who wrote: A middle-aged balding photographer My teacher and friend played rock and roll when I was young. I went to take pictures of the Black Panthers some time ago. When I came back, I was very emotional. It was unimaginable! It’s unimaginable! The man who looked like a tough guy back then is now walking towards me with a thermos cup!

Zhao Mingyi himself also responded on Weibo: I heard that my thermos cup became popular on Weibo. Netizens joked that maybe there were wolfberries soaked in the thermos cup, which is a middle-aged health regimen, making the meme famous on the Internet.