what does Longquan and Xianning have in common?
Xianning Xianning () is a prefecture-level city in southeastern Hubei province, People's Republic of China, bordering Jiangxi to the southeast and Hunan to the southwest. It is known as the "City of Osmanthus".
Jingdian Shiwen Jingdian Shiwen (), often abbreviated as "Shiwen" in Chinese philological literature, was a c. 582–589 exegetical dictionary or glossary, edited by the Tang dynasty classical scholar Lu Deming. This Chinese dictionary contains invaluable "fanqie" annotations for pronunciations of characters in the Chinese classic texts, the Taoist ones ("Lao Zi" and "Zhuang Zi") as well as the Confucian ones. It also cites some ancient books that are no longer extant, and are only known through "Jingdian Shiwen".