There is too much coal in the mountains there, or the proximity to the sea makes the teas salty in flavor .... "Ding was quite detailed and honest about Taiwanese tea.
以金包里、雞籠、三貂等所產為劣；山多產煤，近海味鹹也。… …」對台灣茶葉分佈的情況，已有翔實認識。