《太平广记·卷三百九十九·水（井》
这些丹砂的汁液凭借泉水渐渐流入井中，因此饮这口井的水才得以长寿。
此丹砂汁因泉渐入井，是以饮其水而得寿。
Over time, the juice from the cinnabar gradually seeped into the well in the spring water, which explains why drinking water from this well could prolong one's life. 