Popcorn was first discovered by guatemalans thousands of years ago. Before 3600 BC, one of the oldest popcorn prototypes was discovered in New Mexico. In addition, earlier evidence can be traced back to Peru before 4700 BC. There are also some purple popcorn found in the early twentieth century. It should be normal and not contradictory to say that China had this in Dasong. Song happened to be the peak of China's economic, cultural and academic inventions at that time, and it was also the most developed period of civilization in the world. Its contribution to the world is not as great as its later decline, but it is hard to say that both the east and the west know the source of popcorn very well. It's just that this principle finds that names exist in different forms.