用中文读这个网页 
日本語
| 1885? | Koga Tatsushiro(古賀辰四郎) started developing the desert islands with a 30-year lease from Meiji Government. Then, he had built dried bonito plant. |
| 1885-95 |
Meiji Government started to ascertain carefully whether these islands had any trace of having been under the control of any state including China.
→ These islands had been uninhabited and showed no trace of having been under the control of any state including China. |
| 1894.7 | The First Sino-Japanese War was started. |
| 1895.1 | Japan incorporated the islands(魚釣島,久場島) into Okinawa Prefecture after conducting thorough surveys from 1885 on. |
| 1895.4 | Treaty of Shimonoseki →The Qing Dynasty ceded Taiwan and Penghu group to Japan |
| 1900 | Japanese government authentically named the island group “Senkaku(尖閣諸島)”. |
| 1912 | The Republic of China(ROC) was established. (the fall of Qing Dynasty) |
| 1920 | ROC consul to Nagasaki sent testimonals(感謝状) to Koga and his associate(玉代勢孫伴) for their rescue operation. #detail is here(Japanese) |
| 1940 | Mr. Koga abandon his project and the Senkaku turned to desert islands again. |
| 1945 | WWII finished. Japan lost its sovereign power. |
| 1949 | China(PRC) was established. |
| 1951 | Zhou Enlai protested against the trusteeship for Okinawa by the United States “These islands never have been separated from Japan even by any international treaties in the past.” |
| 1952 | Treaty of San Francisco (Japan recovered its sovereign power) →Japan renounced all right to Taiwan and Penghu group |
| 1953 | Renmin Ribao “Senkaku is included among Okinawa islands.” |
| 50's 60's |
During 50's - 60's, China had no interest to the Senkaku islands.（maps prove this） |
| 1968 | In the autumn of 1968, an academic survey conducted with the cooperation of the United Nations Economic Commission for Asia and the Far East (ECAFE) indicated the possibility of the existence of petroleum resources on the East China Sea, and attention was focused on the Senkaku Islands. |
| 1972 | China began to draw the Senkaku as a Chinese territory "Diaoyu" on its maps. |
| 1972.5 | Okinawa returned to Japan |
| ▼Q&A on the Senkaku Islands | |
★Japan-China Relations: Current Situation of Senkaku Islands - Produced by the MOFA of Japans
【FAQ for Senkaku】
Q: China(PRC) claimed the Diaoyu(Senkaku) when the San Francisco Treaty was concluded(1951-52).
A: Zhou Enlai's protest was just against the trusteeship for Okinawa, not against the attribution problem of the Senkaku.
(---> see detail)
If China had a question about the ownership at that time, it surely ought to have demanded the restoration of the island(s) during the trusteeship period(1945-1972).
However its actual assertions were “Senkaku is included among Okinawa” and “Okinawa should be returned to Japan as soon as possible”.
Q: The Treaty of Shimonoseki(Maguan) was not equal treaty,so invalid.
A: Senkaku was not included among Taiwan nor Penghu group which were ceded under the treaty. See Q.6 for more details
If the Qing owned the island and ceded it to Japan, it should have emphasized that to discount the reparation. However it didn't.
I suspect the Qing didn't even care about the small island at that time.
# The concept of economic waters wasn't fixed until the mid of 20 century. I can't believe The Great Qing had a pssionate concern for the far remote small island where a person hadn't lived. It must have been a worthless island for Qing.
Q: Diaoyu is our island from the Ming Dynasty, the Qing Dynasty period.
A: It's too old to claim the right. An assertion that "we discovered it" or "it had been drawn on a map" is not considered as a positive evidence of its ownership under the international law. Keeping it under control is the only way to prove the sovereignty over it. Are there any evidence of activities or traces on the land by the Qing Dynasty?
Q: At the end of the 19th century, Japan investigated Diaoyu slyly. This means Japan recognized it was the Qing's territory.
A: It is a subjective and selfish assumption. It is not surprising that a Nation investigates secretly the land which might be ownerless, is it?
-- Jokes --
Q: According to our old books, Diaoyu had been named there and also was used as a landmark for ships.
A: That is not a positive evidence to prove the sovereignty. Does the polestar belong to any country?
Q: Diaoyu was drawn on our old maps...
A: Oh, you believe maps? Okey, newer maps are more certain. Old map is really uncertain & dangerous. :)
【Summary for Senkaku】
1. China had no complaints during 1949-1970. Renmin Ribao & Chinese maps had regarded it as Japan.
2. Japan began to control the Senkaku from 1885 at least. The Qing didn't care about the far small island(s).
3. There is no proof the Qing had controled the Senkaku.
In addition, China(PRC) is not a direct successor to the Qing government.
==> These facts clearly prove the Senkaku Islands is Japanese territory. :)
No one can claim the ownership of what has not been owned once.
No one can claim the ownership of what the person had once regarded as other's.
Estoppel is also a extremly important rule under the international law.
【Appendix】
According to Ming Dynasty official record, 400 years ago Senkaku was out of its governed area.… （Japanese / Yomiuri ） Jan, 2013 added
>>See also 1:Diaoyu(Senkaku) is our territory? (Maps) 2:Renmin Ribao(1953.1.8): “Senkaku is included among Okinawa islands.” 3:Zhou Enlai(1951.8.15): “These islands never have been separated from Japan even by any treaties in the past.” *:Chronology tabel, Q&A