wài​shēng​dǎ​dēng​lóng

following the old ways

外甥打灯笼 外甥打燈籠 wài​shēng​dǎ​dēng​lóng
following the old ways
A pun on "shining on one's uncle", which sounds like "following the old ways" in this 歇后语 xiē​hòu​yǔ (two-part metaphorical riddle); it describes things remaining the same or following precedent without change.

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