Complex sentence: A sophisticated drainage system was incorporated into the Rongxian Giant Buddha when it was built, still in working order; it includes drainage pipes carved into various places on the body, to carry away the water after the rains so as to reduce weathering.
Split into simpler sentences: A sophisticated drainage system was incorporated into the Rongxian Giant Buddha when it was built. It includes drainage pipes carved into various places on the body, to carry away the water after the rains so as to reduce weathering.