Flag of the Chinese Federation, WWIII

Capital-Shanghai
Official Languages-Standard Chinese (Federal Government only); Mongolian, Tuvan, Manchu, Korean, Russian, English, Spanish, Portuguese, Hakka, Hokkien, Cantonese, Zhuang, Jingpho, Vietnamese, Lao, Kachin, Nepali, Tibetan, Sikkimese, Dzongkha, Hindi/Urdu, Kashmiri, Uyghur, Kazakh, Kyrgyz, Tajik/Dari, Wakhin, Numerous others
Population (est. 2060)-3,553,871,098 (2060 est.)
System of Government-Heavily De-Centralized, Federal, Parliamentary, Constitutional, Democratic, Republic
Legislature-Federal Congress
        -National Executive Council
        -Chamber of Representatives
Currency-Federal Yuan (10 Jiao; 100 Fen)

After the US collapsed into civil war, the globe was thrown into chaos. The already fragile global economy collapsed and many formerly prosperous nations found themselves completely unprepared for the severity of the crisis. The People's Republic of China allowed in, and helped transport, over 50 million out of the total 70 million refugees. The idea was that since many of these Americans were highly educated, they could use this experienced workforce to revitalize its economy. Plus, with China overbuilding before the Great Recession, effectively leaving it with entire cities nearly uninhabited. China could easily house the first arrivals, and the additional housing needed for the rest was being built by an army of unemployed workers recruited by the government as a way to put people back to work. The majority of these Americans (about 32 million) were settled in Northeastern China (leading to them later being dubbed the Amerimanchus), while the rest were settled mainly threw out Inner Mongolia and Xinjiang. Some were settled across the cities of Eastern China. Due to the massive influx of foreigners, China began to struggle to feed them all. With the collapse of the global economy, China couldn't import food from other nations reliably anymore and found itself in a tight spot. To make matters worse for the government, the Americans began spreading their ideas about democracy and freedom around the People's Republic and many of the local population began to support these ideas. With China in crisis and protests shutting down most of the country's cities, the nation declared martial law in an attempt to re-establish order. The People's Liberation Army responded harshly to the protesters and as a result Hong Kong, Macau, Tibet, Xinjiang, and Inner Mongolia seceded. Several units of the People's Liberation Army refused to fire on its own people and revolted. By the beginning of 2016, China had mostly collapsed with the Communist Party retaining control over the area in and around Beijing, Shanghai, and most of Eastern China north of the Yangtze. Control of Gansu, Ningxia, and anything south of the Yangtze was usually anarchic at best. Taiwan exploited the chaos in Southern China and managed to successfully invade Fujian. It managed to gain control of the island province of Hainan without much fighting and managed to win control of Hong Kong and Macau by negotiating with the two city-states. Guangdong and Guangxi fell to military force. In Northeastern China, the local Han population and the Amerimanchus formed the United States of Manchuria. It managed to gain control of the Inner Mongolian cities and regions of Hulunbuir and Hinggan. In 2018, the fighting of the Second Russo-Japanese War (2017-2027) spread to Manchuria when the Russian Union invaded to secure the region. The resulting Russo-Manchurian War (2017-2019) saw the Neo-Japanese Empire support Manchuria and helped Manchuria take the Russian territories of the Jewish Autonomous Oblast, the Vladivostok, the Khabarovsk, and the Amur Krais. Sakhalin was invaded by Japan at the start of the war and was mostly under Japan's control until the Manchurian-Japanese War (2019-2021) drove Japan out. Manchuria went to war against Japan mainly due to the Neo-Japanese Empire constantly trying to control its politics and natural resources. Tibet mostly fell under the control of the Dalai Lama and attempted to remain out of the war and only defend its own territory, but the chaos in Qinghai forced Tibet to invade and annex the province in order to stabilize it, along with historic claims to the region. On February 5th, 2020, the an army of some one million volunteers from Manchuria and Inner Mongolia under the control of the Amerimanchu general, Joseph E. Taylor marched on Beijing. On February 7th, 2020, the southern defensive lines of Shanghai collapsed to renewed advances of the Republic of China Army. On February 11th, North Korea invaded South Korea finally seeing nothing to lose with South Korea's two largest allies effectively gone. Three days later, Manchuria invaded North Korea, trying to destroy it before it conquered the south and weakened the region to the advances of Japan. With much of the northern area of the DPRK undefended as most of its military was deployed against the South, the North collapsed as it found itself surrounded as the South Korean military reestablished control. Pyongyang fell to Manchuria and by 2021, all of North Korea was returned to the Republic of Korea as Manchuria pulled all its forces out to reinforce the push on Beijing. On January 1st, 2021, Shanghai fell to the Republic of China. By February, all of Beijing was engulfed in fighting. On February 28th, 2021, Beijing fell to Manchuria. The remaining remnants of the Communist party collapsed. The United States of Manchuria and the Republic of China set representatives to Shanghai to negotiate. They invited the states of East Turkestan (Xinjiang), Tibet, Mongolia, and Korea to form a lose federation. The member nations would be united under a common customs and monetary union, and joint national defense between its members. The decision was to divide the nation into six republics; the Republic of China, the Republic of Korea, the United States of Mongolia, Mongolia, Tibet, and the East Turkestan Republic. The outbreak of the Third Sino-Japanese War (2026-2029) prompted the Chinese Federation to annex northern Vietnam and a province of Laos to form the seventh, Republic of Vietnam. The 2030's saw a general wave of opportunism among nations and China invaded Myanmar and annexed the Kachin, Shan, and Kayah States in 2032. The Fourth Sino-Japanese War (2045-2058) saw China lose the Shan and Kayah States to the Japanese-dominated, Indian Union. Arunachal Pradesh, Bhutan, Sikkim, Nepal, Northwestern India, and the Pakistani and Indian occupied parts of Kashmir were all invaded in 2034. By 2035, the majority of these territories fell to the Chinese Federation. China's reason for this was to counter the encroachment of the Japanese over the region. The monarchy of Bhutan was allowed to remain in power over state, and Sikkim, Nepal, and Kashmir were also entered into the federation, dividing the federation into fourteen republics (it would later fall to its current 12). The Fourth Sino-Japanese War (2045-2058) saw the Chinese Federation, Japan, the Indochinese Union, Thailand, and the Indian Union heavily devastated. Over an estimated number of 1 billion lives died during the war, and asides from minor territorial changes saw very little accomplished. The Central Asian War (2035-2042) between the Chinese Federation and the Russian-backed puppet state, the Central Asian Union resulted in China annexing Tuva (later incorporated into Mongolia), and provinces of Kazakhstan, Kyrgyzstan, and parts of Tajikistan and the Wakhan Corridor of Afghanistan were added into the East Turkestan Republic. East Turkestan opened these provinces up to Han settlement and have helped play a tremendous part in entrenching the Federation's hold of these new territories. Despite China taking large amounts of Russia's land, the two nations cooperate rather well (despite the official, if not tense, Russo-Japanese Treaty of Alliance). China assembles half of the Russian Union's tanks, and Russia supplies heavy machinery and raw materiel for Chinese industries. China even allowed a Russian naval base on the old Port Arthur site, an extremely tense strain in Russian-Japanese relations.
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Old Map of the Chinese Federation (with flag!)-fav.me/d5d8t76