Lúchuān
Luchuan lies in the mountain country west of Taiyuan, where the Fen River cuts through the high ground. A county of this name was established in 713 from the northern part of Jiaocheng, with its seat at Lüyukou. Its separate administration was short-lived: the following year it was returned to Jiaocheng. The name nevertheless recalls an attempt to govern this stretch of the Fen valley as a distinct district.