節 → 復

Commentary

Water over lake draws a border, and this verse names the most persistent violation of the Han dynasty's northern frontier. The Xiongnu — the nomadic confederacy that plagued China's borders for centuries — raid and plunder repeatedly. The verse is terse, almost a dispatch from the frontier: the northern barbarians intrude upon the border, again and again. From Limitation to Return, the transformation reveals the cyclical nature of this threat. Thunder stirs within the earth — the first yang line returns at the winter solstice. The Xiongnu raids follow a similar rhythm: they recede and return, withdraw and reappear, driven by the seasonal logic of steppe warfare. Return's cosmic cycle mirrors the endless repetition of border incursions that no single defensive measure can permanently halt.