Tīngdào huài xiāoxi, tā kū bù chūlái, zhǐ néng gānháo.
On hearing the bad news, she couldn't actually cry — only wail tearlessly.
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干 here means 'dry' (no tears), 嚎 means 'to howl/wail.' Same 干 in 干笑 (gānxiào, 'forced laugh') — the 'dry' shorthand for 'going through the motion without the real emotion.'