This book explains concretely about Manguk Gongbeop, the international law in the 1900s, and describes how Wijeongcheoksapa(衛正斥邪波) recognized it, and how Korean accepted the international law in terms of history, throughout newspapers about Manguk Gongbeop(萬國公法) at that time. And also identifies how well Joseon(朝鮮) understood international law, furthermore how international law was applied and how it was handled in international society.