It's not as delicious as jiaozi, but comfortable as upside down.
The saying "delicious but not as good as jiaozi" was summed up by people in the old society according to their actual living conditions. According to the old man, in the past, rural people had a hard life. After eating this meal, they were really hungry and ate roots and bark. Later, when the days were better, we could eat white flour, but it was often mixed with sweet potato flour to make food. Occasionally, if you want to improve your life or entertain guests, you will eat jiaozi, which is a very luxurious food.
The "upside down" here actually means lying down, and the comfortable way is just lying down. After a busy day, when we get home, we usually don't want to say anything or do anything, just want to lie comfortably there. Why is lying down the most comfortable? Experts explain that when lying down, it is equivalent to people releasing their nature and returning to the most primitive state.
After all, it's very tiring to work and study now, and everyone likes to lie in bed or nest on the sofa after work and study, and this proverb is just the most common phenomenon.