Analysis of information sources in references of the Wikipedia article "Changhua County" in English language version.
After the terrible insurrection of 1722, it was found that the district of Choolo was too large to be conveniently administered by a single magistrate, and the northern portion was detached to become a new prefecture, named Changwha, while the north part of the island was formed into a ting or division, Tamsui, and was placed under the authority of a marine magistrate.
Hemei Beidou Yuanlin Erhshui Pusin Sihu Siansi Fenyuan Shengang Huatan Dacun Yongjing Sijhou Jhutang Fangyuan Tianjhong Erlin Pitou Dacheng Tianwei Shetou Sioushuei Puyan Lukang Changhua Fusing
After the terrible insurrection of 1722, it was found that the district of Choolo was too large to be conveniently administered by a single magistrate, and the northern portion was detached to become a new prefecture, named Changwha, while the north part of the island was formed into a ting or division, Tamsui, and was placed under the authority of a marine magistrate.
After the terrible insurrection of 1722, it was found that the district of Choolo was too large to be conveniently administered by a single magistrate, and the northern portion was detached to become a new prefecture, named Changwha, while the north part of the island was formed into a ting or division, Tamsui, and was placed under the authority of a marine magistrate.
Hemei Beidou Yuanlin Erhshui Pusin Sihu Siansi Fenyuan Shengang Huatan Dacun Yongjing Sijhou Jhutang Fangyuan Tianjhong Erlin Pitou Dacheng Tianwei Shetou Sioushuei Puyan Lukang Changhua Fusing