Students from Huazhong Street No 1 Primary School in Anqing, Anhui province, attend a craft lesson in which teacher Wang Hua shows them how to make scented sachets that contain herbs including mugwort leaves, on June 17. [Photo by Huang You'an/For China Daily]

A physician uses burning sticks of mugwort leaves to treat a patient who is recovering from COVID-19 in Hubei Provincial Hospital of Traditional Chinese Medicine in Wuhan, Hubei province, on May 23. [Photo/Xinhua]

Wu Zengye, a scented sachet maker, grinds mugwort leaves in a bowl at his workshop in Huaibei, Anhui, on June 14. [Photo by Li Xin/For China Daily]

A worker harvests mugwort at a plantation for a Chinese herb cultivation collective in Mengcheng county, Anhui, on May 19. [Photo by Hu Weiguo/For China Daily]