At the end of the Qing Dynasty, those treaties that humiliated the country and the country were unreasonable and inconsistent with international law, which seriously trampled on China's sovereignty. Legally speaking, they have no influence. Generally speaking, they just don't count However, it should be noted that, due to the poverty and weakness in modern China, many treaties have created an almost unchangeable fait accompli. Specifically, a series of treaties signed by China under Russia's coercion, such as the Sino-Russian Love Treaty, have occupied a large part of Russian territory, been occupied and developed by Russia for too long, and there are no China residents there, so it is almost impossible to recover them. Unless China is strong enough to forcibly recover these occupied territories through war-there is no possibility at present. Those treaties in modern history restrict our opposition to imperialism and other provisions. On the one hand, it is unreasonable; On the other hand, with the progress of the times, it has no practical significance. Besides, China has risen and can't be humiliated any more. In short, humiliating treaties in modern history are basically not counted, but the land occupied by imperialism, the interests seized, and even some cultural heritage (special case: recoverable, very troublesome) have become facts and cannot be recovered.
Painful lesson: backwardness will be beaten, and might is truth!