Is Changzhi Zi Long House the same as Dongwan?

No, according to Fangtianxia's inquiry, Changzhi Zi Long House is a property developed by Shanxi Feng Run Real Estate Development Co., Ltd., located at the intersection of Zijin West Road and Weiyuanmen North Road in Changzhi City. Donghai Bay is a property developed by Fujian Quanzhou Donghai Development Co., Ltd., located in Donghai Street, Fengze District, Quanzhou City. The two properties were developed by different companies.