Non la has its own origin
Like many other traditional costumes of Vietnam, Non la has its own origin, coming from a legend related to the history of rice growing in Vietnam. The story is about a giant woman from the sky who has protected humankind from a deluge of rain. She wore a hat made of four round shaped leaves to guard against all the rain. After the Goddess was gone, Vietnamese built a temple to commemorate her as the Rain-shielding Goddess.
You may sometimes wonder where the moon came from. Was it a planet that traveled too close to Earth and was captured in our orbit? Actually, the prevailing theory of modern science is that the moon was the result of a large scale collision with the still developing Earth early in its development which caused this large “chuck” to spin off into an orbiting body. This explains the similarity in composition as has been confirmed by many of the moon exploratory space missions that were conducted by NASA.