She was a tier above her Middle Tier Bone Tempering stage.
The reason for her judgement wasn't from drawing lots or a wild guess; she never made judgments without evidence.
If the final scene of disgrace from Li Zhengyi at tonight's banquet left her deeply troubled, the impression that Xiao Yi left on her was like a mix of rain, mist, and wind. Then, the man with no expression, who had followed Li Zhengyi all along and was referred to as Uncle Hua by him, undoubtedly left a profound impression on her!
Or more precisely, it was the moment when Zhao Gao spilled a cup of wine on his face when he emitted a terrifying aura that left a deep impression on her, although it was just for a moment, but it was enough for her to make a judgement about his strength!
That was definitely a strength above the High Tier of the Bone Tempering Period, perhaps even above the peak, because at that moment, even she felt terrified, and if she was scared, his strength was certainly above hers!