Once the Yin and Yang (everything opposite) were trapped together in an egg
But one day the dragon inside it hatched!
Out hatched Pan Gu the dragon. Everyday he would grow 10 feet causing the earth and sky to seperate and go opposite directions.
After growing 30 000 miles tall, Pan-Gu began forming the the landforms such as mountains, caves and also creating oceans.
After 18,000 years Pan Gu fell ill and died. His body turned into many things for including his skull into the top of the sky, hair into vegetation, bones into jade and pearls, limbs into the 4 directions, blood into rivers, breath into wind, voice into thunder and his 2 eyes into the sun and the moon.
Not a mermaid - a half dragon goddess
After the Pan's death, Nuwa came to life, created from the leftover mixtures of yin and yang was the half dragon goddess.The earth was very beautiful but also very lonely, therefore Nawu creating human beings
she was happy with what she created so she decided to make more but noticed that the process took way too long so to solve this, she grabbed pieces of clay and spread it across the land. As the sun rose, the clay would form into human beings.
She then ordered the people to populate the earth and take care of what Pan-gu created, earning her the name of mother of all humans.