Complex sentence: Ancient Khmuic people believed and worshiped the sun spirit for safety and healthy; in the ealy morning whichever day the sky is clear and when the sun starting to rise, Khmuic people opened the east doors of their houses to let the sun shine into their houses.
Split into simpler sentences: Ancient Khmuic people believed and worshiped the sun spirit for safety and healthy. In the early morning whichever day the sky is clear and when the sun starting to rise, Khmuic people opened the east doors of their houses to let the sun shine into their houses.