Source: Because it happens to be the autumnal equinox, the first cup of milk tea in this autumn is to show that you still care about and love someone, and it has become a disguised way of showing love.
However, in fact, the autumnal equinox does not mean the beginning of autumn, but it is already halfway through autumn, so the first cup of milk tea this autumn is the first cup of milk tea in the Mid-Autumn Festival. I don't know who started this wave, and everyone started to relay.
Following this wave, countless stalkers came into being, such as "If you can't afford milk tea, I'll buy you a milk tea cone and drink other people's milk tea", "If you can't afford milk tea, add a pearl to your milk tea for one dollar" and so on.
There are even many people who want to analyze this kind of psychology. Actually, there is no need to analyze it. It's just another wave in the internet wave. Just like sending photos of their three-year-old and eighteen-year-old years ago, it's just a happy time for everyone to play online. Most couples or friends also send red envelopes to each other. The amount is not large, just adding a sense of ceremony to their lives.