go/run round in circles idiom
原地兜圈；毫无进展；白忙，瞎忙乎
to keep doing or talking about the same thing without achieving anything
The discussion kept going round in circles. 讨论一直在原地兜圈子。
I've been running round in circles trying to get all the reports finished before the meeting. 我一直在瞎忙，想在会前写完所有的报告，可是却毫无头绪。