Haidean Independence War

The Haidean Independence War (Chinese: 海淀独立战争), also known as the Haidean Revolution, was a major armed conflict fought between the People's Republic of China, and the Haidean Revolutionary Front, leading to the formation of the Haidean Republic, and the collapse of the People's Republic of China. The war took place primarily in Heilongjiang Province, China, where both sides participated in some form of unconventional and guerilla warfare, leading to accusations of war crimes by both parties.
The war was instigated in the initial aftermath of founder Jiang Xieren's escape from Hegang Prison in 2041, in which he read out a declaration of war against Xi Jingping's "oppressive regime" days after his prison break. However, the war didn't really take it's full turn until 2055, where a mass bombing attack conducted by HRF rebels in Beijing, China killed the Chinese Foreign Minister. Only then, did the Chinese government take the HRF seriously, and retaliated through military deployment into China's Heilongjiang Province, where the Haidean Revolutionary Front claimed as their base of operations. As the conflict flared, China was in the midst of fighting a war against a Chemgota and U.S.-led coalition that started in 2052. This situation caused China to attempt to sustainably stretch it's military resources while it fought against an insurgency and a coalition at the same time, much to no avail. The continuing pressure from both of China's adversaries consequently caused the downfall of the People's Republic of China, after widespread protests against the Chinese Communist Party called for the dissolution of the state in wake of it's failure to defend it's own borders.
In it's collapse, the government of the Republic of China returned to the mainland, and assumed total control of the mainland government. Upon Jiang Xieren's request, the new Chinese government sat with HRF leaders to discuss the possibility of Haidean independence, which led to the signing of the Daqing Treaty in June of 2058. On November the 3rd, 2058, a referendum was held on the matter of the Haidean Constitution being drafted, in which 98.7% of Heilongjiang's population voted in favour of the Constitution being put in place. The announcement of the formation of the Haidean Republic came on the 8th of November, in a televised address from Xieren, where he congratulated the people of Heilongjiang for their "heroic efforts to establish the new Fatherland", and claimed that the formation of the Haidean Republic was a "stepping stone in a path to prosperity unlike anyone has ever seen".
As for the remnants of the Chinese Communist Party, many prominent members had fled to either Russia, Cuba, Vietnam, Laos or North Korea to seek asylum in order to avoid being captured by Haidean or Taiwanese authorities. Those who were captured by said authorities were given jail terms for a range of crimes, including unlawful surveillance and systematic corruption. Those who were accused of crimes against humanity, including the unlawful detention the Uyghur peoples, were sentenced to life imprisonment. Xi Jingping died on the 14th of December, 2058, from a stroke trying to escape to Russia.
The war caused the deaths of between 715,000 and 1,577,000 civilians, around 100,000 Haidean Revolutionaries, 200,000 to 500,000 PLA troops, and around 1,000 foreigners. War crimes committed during the war included massacres of civilians, rape, and torture; the Chinese destroyed hundreds of towns in Heilongjiang and relocated over a million of it's own citizens to concentration camps. Upon independence in 2063, 1,900,000 pro-China residents in Heilongjiang fled to Russia within a few months in fear of the HRF's revenge. The Russian government was unprepared to receive such a vast number of refugees, which caused turmoil in Russia.