This stick recalls the ancient states of Zheng and Wei, whose rulers became infamous for their decadent court music. Think of it like the late Roman Empire — when societies prioritize shallow pleasures over substance, everything starts falling apart. The music mentioned here wasn't just entertainment; in ancient China, music reflected moral character.
Proper court music was solemn and dignified, meant to cultivate virtue. But these states embraced sensual, corrupting melodies that reflected their rulers' moral decay. The 'poisonous spear' imagery suggests how this cultural rot spread through society like a weapon, weakening the kingdom from within.
Eventually, both states collapsed, their people scattered, their cities abandoned. It's a cautionary tale about how ignoring foundational principles — whether in governance, culture, or personal life — leads to inevitable breakdown.