From what I have read, Sino-German relations were growing at a phenomenal rate during the period of the Weimar Republic, with the German government sending military advisers to China to aid the Kuomintang government against the communist insurgency in the hinterlands. The relations were even maintained to an extent in the first few years of Nazi Germany, prior to the inclusion of Japan in the Anti-Comintern Pact in 1936.
What is the possibility that, had the Weimar Republic survived, and had it continued to strengthen relations with China at the expense of Japan, it would escalate it its military involvement in China to the point of deploying Reichswehr personnel in defense of the Chinese once the Second Sino-Japanese War occurs as OTL?
What is the possibility that, had the Weimar Republic survived, and had it continued to strengthen relations with China at the expense of Japan, it would escalate it its military involvement in China to the point of deploying Reichswehr personnel in defense of the Chinese once the Second Sino-Japanese War occurs as OTL?