Yántíng
Yanting lies in the hills of northern Sichuan, east of the Fu River. Its name is linked to the salt wells that gave this district an important source of revenue. Brine was drawn from wells and boiled to produce salt, a trade reflected in local records over many centuries. Song histories list six salt wells at Yanting, and the district remained among Sichuan's salt-producing counties under the Yuan. Ming tax records also attest to the continuing importance of the wells and their output.