Look back, for example, to 1987. when the citizens of the Houchin District laid siege to an industrial site to protest the construction of a naphtha cracker by the China Petroleum Corporation.
像民國七十六年開始，後勁地區居民反對中油公司興建五輕煉解廠而發起的圍廠事件，日後的林園、大社兩鄉反石化工業汙染，都發生民眾大規模圍廠抗爭行動。