1890年1月13日，冲绳县知事又请示内务大臣，称钓鱼岛等岛屿“为无人岛，迄今尚未确定其管辖”，“请求将其划归本县管辖之八重山官署所辖”。1893年11月2日，冲绳县知事再次申请建立国标以划入版图。日本政府仍未答复。甲午战争前两个月，即1894年5月12日，冲绳县秘密调查钓鱼岛的最终结论是：“自明治十八年(1885年)派县警察对该岛进行勘察以来，未再开展进一步调查，故难提供更确切报告。……此外，没有关于该岛之旧时记录文书以及显示属我国领有的文字或口头传说的证据。”
The governor of Okinawa Prefecture submitted the matter for approval to the Minister of Internal Affairs once again on January 13, 1890, saying that Diaoyu Dao and other "above-mentioned uninhabited islands have remained under no specific jurisdiction", and that he "intends to place them under the jurisdiction of the Office of Yaeyama Islands." On November 2, 1893, the governor of Okinawa Prefecture applied once again for setting up sovereignty markers to incorporate the islands into Japan's territory. The Japanese government did not respond. On May 12, 1894, two months before the Sino-Japanese War, the secret facts-finding missions to Diaoyu Dao by Okinawa Prefecture came to a final conclusion, "Ever since the prefecture police surveyed the island in 1885 (the 18th year of the Meiji period), there have been no subsequent investigations. As a result, it is difficult to provide any specific reports on it... In addition, there exist no old records related to the said island or folklore and legends demonstrating that the island belongs to our country."
日本外务省编纂的《日本外交文书》明确记载了日本企图窃取钓鱼岛的经过，相关文件清楚地显示，当时日本政府虽然觊觎钓鱼岛，但完全清楚这些岛屿属于中国，不敢轻举妄动。
Japan's attempts to occupy Diaoyu Dao were clearly recorded in Japan Diplomatic Documents compiled by the Japanese Foreign Ministry. Relevant documents evidently show that the Japanese government intended to occupy Diaoyu Dao, but refrained from acting impetuously as it was fully aware of China's sovereignty over these islands.
1894年7月，日本发动甲午战争。同年11月底，日本军队占领中国旅顺口，清朝败局已定。在此背景下，12月27日，日本内务大臣野村靖致函外务大臣陆奥宗光，认为“今昔形势已殊”，要求将在钓鱼岛建立国标、纳入版图事提交内阁会议决定。1895年1月11日，陆奥宗光回函表示支持。同年1月14日，日本内阁秘密通过决议，将钓鱼岛“编入”冲绳县管辖。
Japan waged the Sino-Japanese War in July 1894. Towards the end of November 1894, Japanese forces seized the Chinese port of Lushun (then known as Port Arthur), virtually securing defeat of the Qing court. Against such backdrop, the Japanese Minister of Internal Affairs Yasushi Nomura wrote to Foreign Minister Mutsu Munemitsu on December 27 that the "circumstances have now changed", and called for a decision by the cabinet on the issue of setting up sovereignty markers in Diaoyu Dao and incorporating the island into Japan's territory. Mutsu Munemitsu expressed his support for the proposal in his reply to Yasushi Nomura on January 11, 1895. The Japanese cabinet secretly passed a resolution on January 14 to "place" Diaoyu Dao under the jurisdiction of Okinawa Prefecture.
日本官方文件显示，日本从1885年开始调查钓鱼岛到1895年正式窃占，始终是秘密进行的，从未公开宣示，因此进一步证明其对钓鱼岛的主权主张不具有国际法规定的效力。
Japan's official documents show that from the time of the facts-finding missions to Diaoyu Dao in 1885 to the occupation of the islands in 1895, Japan had consistently acted in secrecy without making its moves public. This further proves that Japan's claim of sovereignty over Diaoyu Dao does not have legal effect under international law.
(二)钓鱼岛随台湾岛被迫割让给日本
2. Diaoyu Dao was ceded to Japan together with the Taiwan Island
1895年4月17日，清朝在甲午战争中战败，被迫与日本签署不平等的《马关条约》，割让“台湾全岛及所有附属各岛屿”。钓鱼岛等作为台湾“附属岛屿”一并被割让给日本。1900年，日本将钓鱼岛改名为“尖阁列岛”。
On April 17, 1895, the Qing court was defeated in the Sino-Japanese War and forced to sign the unequal Treaty of Shimonoseki and cede to Japan "the island of Formosa (Taiwan), together with all islands appertaining or belonging to the said island of Formosa". The Diaoyu Dao Islands were ceded to Japan as "islands appertaining or belonging to the said island of Formosa". In 1900, Japan changed the name of Diaoyu Dao to "Senkaku Islands".
三、美日对钓鱼岛私相授受非法无效
III.Backroom Deals Between the United States and Japan Concerning Diaoyu Dao are Illegal and Invalid
第二次世界大战后，钓鱼岛回归中国。但20世纪50年代，美国擅自将钓鱼岛纳入其托管范围，70年代美国将钓鱼岛“施政权”“归还”日本。美日对钓鱼岛进行私相授受，严重侵犯了中国的领土主权，是非法的、无效的，没有也不能改变钓鱼岛属于中国的事实。
Diaoyu Dao was returned to China after the Second World War. However, the United States arbitrarily included Diaoyu Dao under its trusteeship in the 1950s and "returned" the "power of administration" over Diaoyu Dao to Japan in the 1970s. The backroom deals between the United States and Japan concerning Diaoyu Dao are acts of grave violation of China's territorial sovereignty. They are illegal and invalid. They have not and cannot change the fact that Diaoyu Dao belongs to China.
(一)“二战”后钓鱼岛归还中国
1. Diaoyu Dao was returned to China after the Second World War
1941年12月，中国政府正式对日宣战，宣布废除中日之间的一切条约。1943年12月《开罗宣言》明文规定，“日本所窃取于中国之领土，例如东北四省、台湾、澎湖群岛等，归还中华民国。其他日本以武力或贪欲所攫取之土地，亦务将日本驱逐出境”。1945年7月《波茨坦公告》第八条规定：“《开罗宣言》之条件必将实施，而日本之主权必将限于本州、北海道、九州、四国及吾人所决定之其他小岛。”1945年9月2日，日本政府在《日本投降书》中明确接受《波茨坦公告》，并承诺忠诚履行《波茨坦公告》各项规定。1946年1月29日，《盟军最高司令部训令第677号》明确规定了日本施政权所包括的范围是“日本的四个主要岛屿(北海道、本州、九州、四国)及包括对马诸岛、北纬30度以北的琉球诸岛的约1000个邻近小岛”。1945年10月25日，中国战区台湾省对日受降典礼在台北举行，中国政府正式收复台湾。1972年9月29日，日本政府在《中日联合声明》中郑重承诺，充分理解和尊重中方关于台湾是中国不可分割一部分的立场，并坚持《波茨坦公告》第八条的立场。
In December 1941, the Chinese government officially declared war against Japan together with the abrogation of all treaties between China and Japan. In December 1943, the Cairo Declaration stated in explicit terms that "all the territories Japan has stolen from the Chinese, such as Manchuria, Formosa [Taiwan] and the Pescadores, shall be restored to the Republic of China. Japan will also be expelled from all other territories which she has taken by violence and greed." In July 1945, the Potsdam Proclamation stated in Article 8: "The terms of the Cairo Declaration shall be carried out and Japanese sovereignty shall be limited to the islands of Honshu, Hokkaido, Kyushu, Shikoku and such minor islands as we determine." On September 2, 1945, the Japanese government accepted the Potsdam Proclamation in explicit terms with the Japanese Instrument of Surrender and pledged to faithfully fulfill the obligations enshrined in the provisions of the Potsdam Proclamation. On January 29, 1946, the Supreme Commander for the Allied Powers Instruction (SCAPIN) No.677 clearly defined Japan's power of administration to "include the four main islands of Japan (Hokkaido, Honshu, Kyushu and Shikoku) and the approximately 1,000 smaller adjacent islands, including the Tsushima Islands and the Ryukyu Islands north of the 30th parallel of North Latitude". On October 25, 1945, the ceremony for accepting Japan's surrender in Taiwan Province of the China War Theater was held in Taipei, and the Chinese government officially recovered Taiwan. On September 29, 1972, the Japanese government committed with all seriousness in the China-Japan Joint Statement that "the Government of Japan fully understands and respects this stand of the Government of the People's Republic of China [Taiwan is an inalienable part of the territory of the People's Republic of China], and it firmly maintains its stand under Article 8 of the Potsdam Proclamation."
上述事实表明，依据《开罗宣言》、《波茨坦公告》和《日本投降书》，钓鱼岛作为台湾的附属岛屿应与台湾一并归还中国。
These facts show that in accordance with the Cairo Declaration, the Potsdam Proclamation and the Japanese Instrument of Surrender, Diaoyu Dao, as affiliated islands of Taiwan, should be returned, together with Taiwan, to China.
