White Tea
During the period of Emperor Yao, a woman named Lan Gu fled to the foot of Taimu Mountain to escape the chaos of war. One year, Taimu Mountain was covered by measles, and the children were killed by the disease one by one. Lan Gu was heartbroken when she saw it. One night, Lan Gu met an immortal in her sleep. The immortal guided Lan Gu to the top of Hongxue Cave to pick the leaves of a kind of white tea which can cure measles after brewing white tea with boiling water. The next day, after getting up, Lan Gu climbed to the top of Hongxue Cave and found a white tea tree. So, she began to process the white tea according to the immortal's instructions, sent it to every villager's home, and finally drove away the "measles" demon.