Use your own words to summarize the causes, processes and results of Pangu’s creation of the world.

A long time ago, the universe was chaotic, with no light, no sound, no up, down, left, right, east, west, south, just like a big round egg, but this "egg" had a center. This center is the ancestor of mankind - Pangu. Pangu conceived in this "egg" for eighteen thousand years. One day, Pangu split the "egg" in half, one half was the sky, and the other half was the earth. The sky grew one foot taller every day, and the earth became thicker every day. Pangu also grew one foot every day. The weather changed according to Pangu's emotions. When he was happy, it was sunny, when he was angry, it was rainy. Later, Pangu died, and his left eye turned into the sun. , his right eye became the moon, his hair and beard became stars; his muscles became soil, his teeth became treasures, and his hair became flowers and trees. From then on, a colorful world was born.