This scenario in the last Chinese dynasty gradually escalated to a chaotic warlord era in which the most powerful northern warlords were hostile towards the revolutionaries in the south until the northern warlords were defeated in the Northern Expedition.
This scenario in the last years of the Qing dynasty gradually escalated to a chaotic warlord era in which the most powerful northern warlords were hostile towards the revolutionaries in the south who overthrew the Qing monarchy in 1911. The rivalry was not fully resolved until the northern warlords were defeated in the Northern Expedition.