The pronunciation of Danzhou in Hainan was dānzhōu.
The correct pronunciation of Danzhou in Hainan was dānzhōu.
Danzhou was a prefecture-level city under the jurisdiction of Hainan Province, located in the northwest of Hainan Island. Danzhou was described as the regional central city of Hainan Province. It had the largest land area and the longest coastline in Hainan Province. Therefore, it could be concluded that Danzhou was indeed located in Hainan.
The Danzhou in Qingyu years did not refer to the Danzhou in Hainan. The Danzhou in Qingnian referred to the Danzhou in Jiangsu and Zhejiang, not the Danzhou in Hainan. Therefore, the Danzhou in Qingyu was not Danzhou in Hainan.
The correct pronunciation of Danzhou in Hainan was dānzhāu, not zhan.