Because of historical reasons, there are still many countries in the world that hate each other and look down on each other, the most typical such as Japan and Russia. It can be said that there is a history of bitterness and hatred, several big fights, you come and go, and now it is still intolerable. But, you know what? The two countries were once intimate, and on three occasions they secretly agreed to divide China, regarding the Qing Dynasty as a bag of the two countries.
The first time, in 1905.
After the end of the Russo-Japanese War, in which the two countries fought for the northeast, Tsarist Russia, for the sake of China's interests, turned japan into a jade war, and secretly discussed the division of China. At that time, the two countries discussed a principle of division, that is, Russia would not interfere in Japan's annexation of Korea, which was a vassal state of China. Japan also recognized Outer Mongolia as an integral part of Tsarist Russia.
After the agreement was reached, when the two countries were preparing to implement it, britain, the United States and other powers jumped out. What's the situation? The Qing Dynasty was divided by you, so it directly interfered, and for this reason Japan and Russia did not dare to directly promote it. However, although they did not dare to openly, they still formed a military alliance in private, indicating that they would encounter Western interference again, so the two countries would unite to confront each other.
The second time, in 1911.
At that time, China underwent the Xinhai Revolution, the north and south were divided, and the country lost its core. Japan and Tsarist Russia saw this as a godsend to divide China at a time of division. So the two countries went together again, secretly agreeing that Japan would intensify its annexation of Korea and occupy northeastern Manchuria, while Tsarist Russia planned a rebellion by the princes of Outer Mongolia. The two countries acted in unison, when China became a chopping board fish meat, powerless, and it was during this period that Outer Mongolia began to separate, North Korea was annexed, and northeast China was infiltrated.
The third time, during World War I.
At this time, the Western powers were all involved in the war, and there was no time to take care of the East, and it was difficult for Tsarist Russia to withdraw, so it became the stage for Japan. At this time, Tsarist Russia did not want Japan to monopolize China, so it once again secretly agreed with Japan that China could not fall into the hands of other countries hostile to Russia and Japan. This is actually an alliance, that is, China must be under the control of Russia and Japan, which is simply hegemonic to the extreme. However, the final result is that China has not been divided, Russia and Japan have become enemies, and Russia has become our friend.