曾经是俄们现在是你们
[céng jīng shì é men xiàn zài shì nĭ men]
The character '俄' means Russia in Chinese, which should probably be '我们(women meaning 'we/us'). The correct phrase should be 'We were once us, but now we are you'. In this context, it can suggest past memories and a reflection that although they used to share something together, now there's a gap between them and they seem alien to each other.