That is the Dragon King. With poison means capable of putting one's self to death, so one will become selfless.

彼所梦之巨蠎乃龙王是也。具毒乃意谓能够令一个人的自我死去，以令人变成无我。

youdao

High progressivity is poison for growth because it kills the incentive for self-improvement.

FORBES: The Republican Fiscal Cave Is Much Worse Than The Fiscal Cliff

The reason, I would hazard, why dual-heritage people self-report as being racially unmixed is that there's still plenty of racist poison in the body politic.

BBC: A Point of View: Race, class and house parties