Complex sentence: Worse yet, Taiwan Power Co. bought the newest version of blueprint with revolutionary changes and more mistakes, subcontracts to the stupid and careless contractors; which means the unreliable contractors are trying to construct an unprecedented, very complex nuclear power plant.
Split into simpler sentences: Worse yet, Taiwan Power Co. bought the newest version of blueprint with revolutionary changes and more mistakes, some subcontractors are stupid and careless. Which means the unreliable contractors are trying to construct an unprecedented, very complex nuclear power plant.