管窥所及管窺所及

guǎn kuī suǒ jí

Meaning

in my humble opinion

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Characters

管guǎntube, pipe, duct; to manage, to control⺮官窥kuīto peep, to spy on, to watch穴规所suǒplace, location; "that which", a particle introducing a passive clause户斤及jíto extend; to reach; and; in time又