Because there are more people in summer.
Convenience should be the most striking feature of "hot pot cup". Every time I go to a hot pot restaurant to eat hot pot, not only many stores have to wait for a long time, but also it smells like hot pot, which is really unfriendly to "lazy people" like Dine, and the appearance of "hot pot cups" is a good solution. When you are bored, you can buy them and eat them casually. A person who wants to eat hot pot but doesn't want to go to hot pot restaurant can also help you solve this problem. With this new way of eating "hot pot cup", it is not embarrassing to eat hot pot alone.
Another important factor of hot pot cup explosion is novelty. According to statistics, at present, the main consumers in the hot pot industry are the post-90s and post-00s groups. With the development of economy and the improvement of living standards, the consumption values of these two groups are affected and full of modern flavor. They pursue all new things and like more avant-garde and innovative things. This novel way is undoubtedly easier to attract their attention.