Who invented braised eggs?

Egg white and yolk embrace each other to form a "Tai Chi" pattern, which is the invention patent of 60-year-old Liu Rongyao-"Tai Chi Egg". "The Taiji eggs I made are not only beautiful in appearance, but also much more delicious than the' hillbilly' braised eggs. If there is enough money to do this project in Zhengzhou, there must be a market. " Liu Rongyao took out his patent certificate for invention, saying that braised eggs made "Tai Chi" graphics. Egg white and yolk embrace each other as if they were inseparable. How are eggs made into this shape? Many people are interested in this. Liu Rongyao revealed that "Taiji Egg" is actually a kind of marinated egg. It is the fertilized egg that is "restricted" to form a figure very similar to Taiji diagram, which is naturally formed due to life movement during incubation.