先南后北 / Song Unification Strategy
Song unification strategy / 先南后北 is the strategic frame 170.宋太祖之死：烛影斧声，阴谋论中的人性谜团（下） gives to 赵匡胤 / 宋太祖 and 赵普’s early statecraft. Rather than attacking the northern frontier first, the source says the early 北宋 chose to absorb southern regimes before confronting enemies tied to northern alliances.
The episode treats the strategy as constraint-driven. A new regime with limited troops, fragile legitimacy, finite revenue, and difficult supply lines needed southern manpower, grain, and tax base before a major northern war. This links strategic patience to 开封定都取舍 and 宋初军事集权.
The concept also carries a moral warning. Strategic rationality does not guarantee humane execution: the Shu campaign and 川蜀征服后反抗 show how unification can end one set of local abuses while creating another through conquest violence and extraction.
EP252 《太平年》之外的五代十国，什么样？ adds the southern-regime background that makes the strategy more legible. If southern regimes preserved wealth, population, and culture during northern turnover, then “先南后北” was also a way for the early Song to absorb the accumulated base of economic and cultural southward shift.
Key Claims
- Sequencing can be a decisive part of state-building strategy.
- A small northern enemy may be strategically expensive when it is tied to a larger ally.
- Logistics and tax base can matter as much as battlefield ambition.
- Unification narratives should be tested against local experience after conquest.
- Political prudence and moral cost can coexist in the same successful strategy.