隔岸观火｜gé àn guān huǒ

Meaning: to watch the fires burning across the river / to delay entering the fray until all others have been exhausted by fighting amongst themselves

Original: “中国不是乌克兰危机的制造者，也不是当事方。作为联合国安理会常任理事国和负责任大国，我们既不会隔岸观火，也不会拱火浇油，更不干趁机牟利的事。”