After you sternly refused the Snow Emperor's request to hold a celebratory feast for your breakthrough, she discussed with you when to reveal your true identity.
As your strength rose, this matter would have to be brought into the open sooner or later. In a world like this, many of your actions appeared strange to quite a few people.
Qin Huang could still endure without asking for now, but if more incidents continued to pile up and you refused to explain the reason, he might come knocking in person.
Moreover, in a world like this, even if you kept many secrets to yourself, as long as Qin Huang had some suspicions and performed deductions based on targeted clues, the Snow Emperor believed that, given the enormous gap in strength between you and Qin Huang, he would certainly deduce the answer.
He did not know that you were not afraid of others deducing your secrets, and you clearly did not wish to reveal this secret either. After all, the No-Self trait was far too outrageous. If Qin Huang could not obtain even a shred of the information he sought, who knew what wild notions he might dream up.
Yet when it came to cultivating Breath Concealment and Cloud Swallowing, you were not confident enough to ensure that even Qin Huang, wielding the supreme treasure Jihuang Mirror, would only discover the results you wished him to see.
Rather than that, it would be better to follow the Snow Emperor's suggestion and, at worst, "lay your cards on the table." With the Snow Emperor able to guarantee matters completely, using the Jihuang Mirror for such investigation required a price. Qin Huang had no reason to use the Jihuang Mirror for deductions.
And if it was merely Qin Huang's personal act of deduction, you