Well, one of the changes that already have occured in China prior to this is that Yuan Shikai never actually got around to making his bid for emperorhood. The May 4th Movement might not have been as strong in TTL, either- the 21 Demands were never issued, and the Treaty of Strassburg was... slightly more in China's favour than OTL's Paris Treaty was. Could that make Zhang and Kang's attempt more plausible?Interesting developments in China. I'm not sure, however, that Zhang Xun would attempt his coup as late as 1921, or for that matter that he would get the support of Kang Youwei. When they tried it in 1917 in OTL, it was already an anachronistic move; the window of opportunity to restore imperial rule had closed with Yuan Shikai's failed bid for emperorhood the previous year. Imperial restoration had become even more elusive after the May 4 movement in 1919, which finished off Confucianism as China's official state ideology for the rest of the 20th century. IMHO it would be more plausible to have some warlord try to stage a coup, several of them did just that in the course of the 1920s. It would be just as good an excuse for Li to bolt south, that much is plausible--he was rather an opportunist, and not a very brave man (legend has it he only took the leadership of the revolutionary armies after being dragged at gunpoint from under his concubine's bed).
I second Faeelin, I don't see Sun trying to change the regime's name from the Republic of China.
As for Sun changing his regime's name... that would seem harder to explain, yes.
Whether that could in turn make Sun attempting to 're-start' the Republic by, eh, re-branding it, so to speak, more plausible...
