Shen Qingqiu shifts, uncomfortable. Bingge, changing? But he'd already had all his character development, in the Abyss arc.¹ He's not sure he likes the idea of a Binghe who he can predict even less than he can this one, whose character traits and emotions he understands pretty well.² Still, Nina and Binghe really do appear to be friends, and he trusts her that whatever change is happening is good, so instead of arguing he gives in to his curiosity. "What happened in volume five of The Princess and the Barbarian?"

¹ That's how it works, right? One and done?
² Better than anyone else on weibo!^3
3 Definitely untrue.