One of the special stamps of "China Ancient Town (Group 2)" issued by China Stamps in 2016 was designed as a model of the most representative dragon bridges among the 15 ancient bridges in Huangyao, which were built in the Wanli period of the Ming Dynasty. The dragon bridge is a very unique bridge, the ancient bridge water arch and the dry arch two holes, flood floods through the dry arch out, reduce the impact of flood on the bridge body, the role of dry arch is to discharge flood, such exquisite design fully reflects the wisdom of the ancients.