It was not until the Xianfeng reign (1851-1861) of the Qing dynasty, after Taiwan began trading with foreign countries, that tea was grown there. The transition from sweet potatoes to tea, and the reasons behind it, would make excellent material for teaching about local history.
清咸豐年間外國通商後才種茶，從蕃薯到茶，其中的變遷與淵源，就是很好的鄉土材料。