Tsarist Russia invaded Sakhalin Island, and the Qing army was the best in the world. Why didn't Ganlong fight back?

Because the early Sakhalin Island was far away from Beijing, although it was its own territory, Sakhalin Island was not directly managed by the Qing army, and all the information could only be understood through the ministers' passbook, so when Russia invaded Sakhalin Island, Qianlong didn't care at all, because the place was remote and the material transportation was difficult, so what Qianlong thought at that time was that an island was not worth mentioning.

Sakhalin Island never got the actual rule and administrative governance of the Qing Dynasty. Sakhalin island is called Sakhalin Island, which is located in the Sea of Okhotsk in the Far East. The inhabitants of the island live a very poor life by feeding on big fish, which is why the Qing Dynasty once called it Kuyu Island, and later renamed it Sakhalin Island.

In fact, in the early Qing Dynasty, in order to guard against Russia, the Qing Dynasty set up generals Jilin General and Heilongjiang in the northeast, and Sakhalin Island originally belonged to Jilin General. During the jaxa War, the Qing Dynasty called on the local residents of Sakhalin Island to stand up against the invading Russian troops and Russian expeditionary forces. As time goes by, Sakhalin Island is really too far away from the capital, and Sakhalin Island is the stocking mode. Russia will certainly not miss this opportunity in vain. Therefore, during the Yongzheng period, Sakhalin Island was also ravaged by Russia all the year round. Due to the frequent occupation of Russia, some local residents of Sakhalin Island often can't tell who is the Russian army and who is the honest official, so a series of manslaughter incidents often occur. At the end of the Qing Dynasty, Russia's occupation of Sakhalin Island became more rampant. Later, Qianlong didn't know if there was Sakhalin Island in the territory of the Qing Dynasty.

We know that although the Qing Dynasty despised the western countries, it was always in awe of the distant Russian empire, and it was always an "enemy courtesy" when dealing with people, that is, equal diplomatic etiquette. Because the Qing court was very familiar with the strength of Russia.