本文训“燧”为“遂”，认为烽燧并非指单一的烽火台而是指古代边关报警系统和制度，并用汉简论证其为“昼则举烽，夜则举火”。

• This article holds that Beacon fire and smoke of wolves' dung was an alarm system of ancient strategic passes at the border rather than single beacon towers, and proves "beacon fire lit at night and smoke of wolves' dung burnt in the day time" by the inscribed bamboo slips of Han dynasty.