To do something secretly, stealthily, or surreptitiously, often to avoid detection or out of dishonesty.
他总是喜欢偷偷摸摸地在夜里翻阅旧照片，生怕被家人发现他怀旧的情绪。
He always likes to secretly flip through old photos at night, fearing his family would discover his nostalgic feelings.
Era:
Early Modern
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Story:
In the Grand View Garden, an embroidered purse was discovered, leading Lady Xing to immediately organize a large inspection team for a thorough search.
Yingchun's wet nurse's daughter-in-law from Wang Zhu'er's household was caught gambling.
They approached Yingchun to intercede on their behalf, but Yingchun, being a timid person, was unable to help them.
Consequently, those from Wang Zhu'er's household complained bitterly, saying they had been '偷偷摸摸' (secretly and deceptively) lured and tricked, and that this situation was all due to Miss Xing.
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