符水

Etymology
is short for. A priest would burn writing which was deemed to have magical properties, and then mix the ashes with water. This water was believed to have healing powers. Zhang Jue (d. 184), the leader of the gave out this water during the outbreak of an epidemic disease. In this way, he attracted a large following, which eventually led to the rebellion.

Noun

 * 1) magic water (usually mixed with the ashes of a burnt Taoist  (written talisman)); charmed water