In ancient times, Chinese food was quite monotonous, except that the grain was wild vegetables. For example, the amaranth in the Book of Songs is a kind of water grass. If you want to eat it, you have to choose it, and it’s a lot of effort.
Before the Qin Dynasty, China had no cockroaches, and cockroaches were crops originating in India;
Before the Han Dynasty, China did not have grapes, celery, parsley, broad beans, cucumbers, garlic, etc. Later, Zhang Yi came out to bring the fruits and vegetables back to the Western Regions, and it was almost enough to play a game of Plants vs. Zombies;
Before the Northern and Southern Dynasties, China did not have eggplant;
Before the Sui and Tang Dynasties, China did not have lettuce and spinach, which came from Persia and the Mediterranean region;
Before the Song Dynasty, there was no watermelon in China;
Before the Yuan Dynasty, China had no carrots;
Before the Ming Dynasty, China did not have potatoes, corn, peppers, tomatoes, etc., all of which originated in the Americas;
Before the Qing Dynasty, China did not have onions, cabbages, etc.