Small factories, big polluters: Also, the central government often doubts the local inspectors, thinking they might be in cahoots with the factory owners, and that that's the reason local environmental work is not being done well. Having "made their careers" in the same place, they perhaps can't be "too heavy-handed" when acting.
小工廠，大汙染偏偏中央又常要懷疑地方稽查人員與工廠同樣在地方「起家」，下手可能無法「太重」，地方環保工作才會做不好。