As stated above voluminous Japanese official documents prove that Japan was fully aware that according to international law Diaoyu Dao has long been part of China and was not terra nullius .

如前所述，日本大量官方文件证明，日本完全清楚 钓鱼岛早已归属中国，绝非国际法上的 无 主 地。

From the perspective there is terra nullius social management mode state-controlled social management mode social participation in state management mode the state-social cooperation mode the state model of social coexistence and social self-government model .

从国家与社会关系分析，社会管理可以分为： 无 主 地社会管理模式、国家控制社会模式、社会参与国家模式、国家社会合作模式、国家社会 共生模式以及社会自治模式。

Japan 's act to include Diaoyu Dao as terra nullius into its territory based on the occupation principle is in fact an illegal act of occupying Chinese territory and has no legal effect according to international law .

日本所谓依据先占原则将 钓鱼岛作为 无 主 地编入其版图，是侵占中国领土的非法行为，不具有国际法效力。