When I was a child, I heard a children's song that talked about how to make it. I forgot how to say it, but it probably means that the master who made the pot stickers kneaded the noodles directly without washing his hands (so the pot stickers have a salty taste) and then deep-fried them. At that time, the master had a piece of mucus stuck to his face, so... Anyway, please accept my answer! !