Chapter 549: Zhang Xian has gone mad; he dared to lay a hand on me, Nan Yun.

Zhang Xian's Longyin Port fleet appeared in the southern waters of Emerald Bay, primarily to block their retreat and search for the enemy's main force.

The fleet then advanced westward, with high-powered radios continuously maintaining contact with the Far East fleet.

While relying on seaplanes and reconnaissance aircraft to search for targets, radar and radio were also frequently used.