The founding ruler builds the enterprise; the successor preserves it.
Tips
history
Most famously paired in Chen Shou’s 三国志: 刘备 is 先主, and his son 刘禅 is 后主. The pairing implies a small, short-lived state; only Shu Han (蜀汉) gets the 先主 / 后主 framing because there were just two rulers.
