r making greenhouses was plastic film, but in this era, plastic could not be produced. Li Chen wasn't a chemical engineer either, so after much deliberation, he could only use copper mirrors that were...her to the ground."Take it away and dispose of it."Li Yinhu's voice was calm and emotionless.Someone immediately came in and dragged the maid's body out."Come, attend to the royal wounds."Li Yinhu col...