I have just watched the Belgian-Dutch news broadcast and learnt from a Chinese critical journalist that it is the first time the Chinese authorities have formally declared that "power must be caged". is that correct? Is that the way of saying that power must be limited, bridled? Can you use other metaphors for that? The word was put in quotation marks in the translation, but I was intrigued by the word. We could only say it was limited, beperkt (using the word you recognize in 'park').