this question is like saying, why can't you eat all those things abroad, but you can't eat enough when you come to China? Because China has a large population, everyone in China eats everything.
the so-called junk food should be divided, because many junk foods are inherently low in cost and too competitive in China, so they can only be sold in other ways.
then the first reason comes from the taste.
To be honest, the taste of China people is particularly strange. If you say it's sweet, he can eat it, and if you say it's spicy, he can eat it. Moreover, he may add some other seasonings to it after eating it, so that he feels that it tastes just right. But in the eyes of foreigners, are you eating shi?
Such authentic things can only be seen by foreigners when they come to China, but not abroad. When junk food like this is put abroad, foreigners have never seen it before, and it has become a treasure. Things are rare, so the export volume reaches tens of thousands.
the second reason is its cost.
Foreigners' food rarely goes to China, and its cost and the middle will cause many problems of taste change. How can a country like China, which is proud of junk food, spend so much manpower and material resources on it?
For example, I once saw a female live broadcast on the Internet. At that time, she was studying abroad and ate a crab. It was super big, much bigger than a human face, but this kind of crab did not exist in the China market, and even if it did, it was super expensive.
third, the cost of food itself is low, and more money is spent on its transportation, but the result is more than that earned in China.
Junk food will leave messages on many posts in China. What is made of plastic? What is made of grass? And these things can be made with the least cost, sent abroad and repackaged. Who knows what the previous life of these things was?