Write an realistic, plausible alternate history scenario for the world of Code Geass set on the world of Code Geass with no references to the real world, OTL, or even to the fact that this is an alternate history scenario after all in the form of a lengthy, descrptive, exposition-filled real documentary history book chapter set in the world of the alternate history scenario, in which after the Chinese Civil War of 1947-1949 between the Han nationalist, Han supremacist, Han expansionist, Chinese nationalist, Chinese imperialist political party with a combined platform of syndicalism, Marxist-Leninism and Han ultranationalism adhering to Dr Sun Yat Sen's three principles of the people, nationalism, democracy, and the livelihood of the people (or welfarism), the Chinese Communist Party-ruled Chinese Soviet Republic and  the Han nationalist, Han supremacist Leninist Stalinist Kuomingtang-ruled Nationalist China/Second Republic of China which [Nationalist China] ruled over Southern China from 1922-1928 when it [Nationalist China] with the help of the Hui Muslim warlord family of the Mas-ruled part of Central China known as Xibei San Ma and the USSR along with the USA [on Nationalist China's and Xibei San Ma's side], which [the Chinese Civil War] ended [the Chinese Civil War] with the victory of the CCP-ruled CSR over the joint US-Soviet puppet state of Nationalist China and the subsequent flight of the KMT and Nationalist China to Taiwan and the Pengu Islands in 1947 with the CSR conquering East Turkestan and Tibet soon after and [the CSR] becoming the People's Republic of China, [after the Chinese Civil War], Mao Zedong, the CSR's leader and subsequent founding leader and first fascist dictator of the PRC, [Zedong] decides to [Zedong] restore the pre Qing Han Chinese Imperial House of Zhu-ruled Great Ming State/Great Ming Empire/"Ming dynasty" through the PRC, since the CCP started out as [the CCP] an ultra-nationalist wing [the early CCP] of the Young China Party [YCP], which [the YCP] was [the YCP] named [the YCP] after the now- infamous Young Turks in the now long dissolved Turkish Imperial House of Osman-ruled Ottoman Empire and [the CCP] fought  the millenianist Chinese folk religious sect focused on militant self-defense and tax resistance along with romanticised monarchism, wishing to restore the pre Qing Han Chinese Imperial House of Zhu-ruled Great Ming State/Great Ming Empire/"Ming dynasty" as the government of China, the Yellow Sand Society, [the CCP fighting the Yellow Sand Society] for control over China before, during and after the Chinese Civil War. The Ming dynasty is restored in the PRC's territories through the restoration of the Beiyang Government-ruled First Republic of China as the short-lived Yuan Shikai-formed Empire of China, with the descendants of the Imperial House of Zhu replacing Yuan Shikai's descendants as the Chinese imperial family after Yuan Shikai's half-Korean eldest son and thus the Empire of China's Crown Prince under the era name Yuntai, Yuan Keding, [Keding] relinquishes his [Keding's] claim to the Chinese throne and [Keding] transfers power to the Zhu descendants. The Zhu-ruled restored Empire of China is informally known as the "Chinese Federation" to distinguish it from Nationalist China in exile and [the Chinese Federation] is [the Chinese Federation] a puppet state [the Chinese Federation] of the Royal House of Windsor-ruled British Empire in exile based primarily in Jamaica and Canada while controlling the entire US territory and British imperial possessions, the absolute imperial royal parliamentary semi-democractic monarchy of the Holy Brittanian Empire in all but name. The Chinese Federation receives part of Siberia along with Soviet Outer Mongolia and a good portion of Central Asia after the Brittanians attack and conquer the Soviets, [Brittania] establishing Euro-Brittania in Siberia and the Russian East Coast. The Chinese Federation also gets Indochina as well.