At the beginning of the chaos, there are no living beings, heaven and earth are connected, and only a chaotic green lotus is bred in the middle, which has five leaves, blooms with twenty-four petals, and forms a lotus seed. At the end of hundreds of millions of years, the lotus seeds cracked, and the Pangu god was born with the open sky axe, and the Pangu god was dissatisfied with the endless depression in the chaos, so he used the open heaven axe to split the heaven and earth.

Later, the great god of Pangu felt that there was nothing in heaven and earth, so he turned into a desolation: the left eye is the sun, the right eye is the moon, and the hair is starry; Blood becomes rivers, lakes and seas, and muscles become thousands of miles of fertile fields; Bones become grass and trees, and tendons become roads; The tooth becomes a gold stone, and the essence becomes a pearl; The air is the wind and clouds, the sound is the thunder, and the sweat is the rain and dew; When the great god Pangu fell, his head and limbs turned into five mountains, and his backbone became the fulcrum between heaven and earth...... The belly has turned into a sea of blood, the sea of blood is tens of thousands of miles in circumference, the blood waves are rolling inside, the fish and shrimp are not prosperous, the birds and insects are not coming, the heaven and the earth are all gathered here, and the people of the flood and wilderness call this place the netherworld blood sea.

(The above is Baidu Encyclopedia information)