Dài xiàn
Dai county in Xinzhou 忻州[Xin1 zhou1], Shanxi
Zhào zhōu qiáo
Zhaozhou bridge over Xiao River 洨河[Xiáo hé] in Zhao county 趙縣|赵县[Zhào xiàn], Shijiazhuang, Hebei, dating back to the Sui dynasty 隋代[Súi dài] (581-617) and the world's oldest extant stone arch bridge