Chuanchou

By the mid-13th century, a magistracy was set up in Penghu by the government of the Yuan Dynasty to exercise jurisdiction over Taiwan and other islands. This office was under the administration of Tungan County in Chuanchou Prefecture.

Source: wiktionary

Phonological differences and regional variations, including the two major variants — Chuanchou (泉州) and Changchou (漳州) — are also recognized by the dictionary, she said.

Source: wiktionary

In the 17th century, Dutch occupiers used Lukang as a major harbor for exports; in 1784 it was designated as the Taiwan seaport for shipping links with the Hanchiang harbor at Chuanchou on the coast of mainland China.

Source: wiktionary