Smoke not only pacifies evil spirits and purifies rooms, but also can carry wishes and prayers on their journey to the heavens.
因此，早在周朝時，人們在祭祀儀典中，就要焚燒木料或牛犢肉，希望靠煙來做為人神間溝通的橋樑。而香味，據說是賢人、神明所鍾愛的，溢滿香氣的地方，才能恭請大駕光臨。