The maritime boundary lines weren't very clear, and fishermen frequently crossed the sea to fish. Wushuang truly hadn't expected such a tragedy. Listening to what Zhang Sao and Lao Zhang had said these past few days, life at sea was often unpredictable. Without clearly defined boundaries, sometimes a strong wind would send fishing boats out of their own country's waters, sometimes unintentionally.
And the coast guard patrols were mostly very rude and brutal, beating fishermen on sight with cruel methods. Lao Zhang had encountered coast guard patrols a couple of years ago; he hadn't even crossed the line, yet they had arrested and beaten him, breaking his arm and almost preventing him from returning home.
