Burning mugwort leaves at night to repel mosquitoes was an important cause of house fires in Longquan Mountain area  In recent years, though, the use of mugwort leaves to repel mosquitoes has decreased significantly
Compared with other causes of family fires in The mountainous area of Longquan, the damage caused by fires caused by burning mugwort leaves at night is relatively small
 However, the number of deaths caused by home fires has not decreased