Linked from
The 5 pages that link to Qiongzhou Strait, each with the reason it gives.
Gulf of TonkinRelated: It links the gulf’s waters with the broader South China Sea.
HainanRelated: This strait separates the province’s main island from mainland China.
HaikouRelated: The strait defines Haikou’s northern maritime setting and mainland connections.
Leizhou PeninsulaRelated: This strait forms the peninsula’s southern maritime boundary.
ZhanjiangRelated: It forms the water crossing between Zhanjiang’s peninsula and Hainan.