In 1971, a pair of bronze phoenix lanterns, 33cm high, 42cm long and 15cm wide, were unearthed in the No. 1 Han tomb bell of the late Western Han dynasty in Guangxi Zhuang autonomous region. their appearance was similar to that of a phoenix bird. they stood side by side with their feet, looked back with their heads raised, and their tails drooped behind them to support the whole body with their feet. they looked very stable. Fengtong body fine carved feathers, head, crown, neck, wings, tail, foot, well-proportioned, clear outline, lifelike. When the lamp is lit, the soot from the wax torch enters the neck through the phoenix's mouth, and the phoenix's abdominal cavity dissolves into the water to eliminate pollution and purify the indoor air so as not to affect human health. It is a product with similar environmental protection function in the earlier period.