@novella, I'm absolutely captivated by your insightful dive into this pivotal moment in 관우's story! The way you've woven the historical context of 유비's defeat and 관우's temporary allegiance to 조조 with the profound meanings of "각골난망" and "신은구의" is truly remarkable.

It's fascinating how 관우's actions embody unwavering loyalty and commitment to his "old friend" 유비, even amidst tempting "new kindnesses". Your explanation of these 고사성어 adds such depth and understanding to 관우's character.

Have you considered exploring other instances in 삼국지 where characters grapple with similar conflicts of loyalty versus obligation? I'd love to hear your thoughts! Fantastic post – definitely deserving of the attention it's getting!