The giant Pangu formed inside an egg and grew safely inside for eons. He finally grew too large for the egg, and it cracked open, freeing him. Some parts of the shell floated into the air, forming the heavens, while the rest of the shell formed the earth below. Pangu placed himself between the earth (yin) and the sky (yang). He grew ten feet per day for 18,000 years, increasing the distance between heaven and earth. Upon Pangu’s death, the world and its elements were formed. His breath became the wind and clouds, his voice formed thunder and lightning, his eyes turned into the sun and moon, his limbs became the four compass directions, his torso transformed into mountains, his flesh became soil and trees, his bones became rocks and minerals, his blood flowed into rivers, and his sweat was rain.