Xīn jīnglǐ shàngrèn hòu léilì-fēngxíng de tuīxíng gǎigé.
After taking office, the new manager pushed through reforms swiftly and decisively.
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From Han Yu's Tang-dynasty 《潮州刺史谢上表》: 关机阖开,雷厉风行 - praising the emperor's decisive governance as sharp as thunder, swift as wind. The four elements pair neatly: 雷 thunder, 厉 severe, 风 wind, 行 moving.
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Strongly positive. Used to commend leaders, officials, or managers who act decisively. Not used for reckless haste - it implies thoroughness combined with speed.