As we all know, dragon is a kind of god beast in ancient myths and legends, and there is no such creature as dragon in the world. In myths and legends, the dragon is always regarded as a noble symbol, and it is so powerful that others can't catch it at all and have no chance to taste its meat. Without dragons, there is no dragon meat to eat.
In fact, the dragon meat here is not what we think in the traditional sense. The dragon here refers to the flying dragon bird, which is a kind of bird. The flying dragon bird is a very rare animal in China. This name sounds scary, but it is actually called by the people. Because the dragon's neck is like a keel and the bird's claws look like African claws, it has such a nickname.
Dragon meat originally refers to the legendary dragon meat, which is a metaphor for something of high value in literary works. People often say "Dragon meat in the sky, donkey meat on the ground", which shows that dragon meat only exists in the sky, which is a metaphor for very rare things.
The Origin of "Dragon Meat in the Sky, Donkey Meat in the Underground"
It is said that before Li Shimin became emperor, he was depressed because of the unclear lawsuit between his brothers and ran out for fun. He went to a scholar's house to spend the night, and they chatted for a long time, and both felt very congenial.
This scholar is also a warm-hearted person. He admires Li Shimin's talent and wants to treat him well, but his family is really poor and there is nothing decent to eat. The scholar was cruel and cruel, and simply killed the only donkey to entertain guests.
Later, Li Shimin sat on the throne and tasted all the delicacies in the world. He was still thinking about the smell of donkey meat in those days, so he would tell people about the delicious food he had tasted and sigh "Dragon meat in the sky, donkey meat on the ground". Because of Li Shimin's support, the delicacy of donkey meat soon spread all over Kyushu, and this "highest evaluation" of donkey meat was handed down.