The reason why Lin Huang suspected that Xia Bing had discovered his identity was because she said "his Kingdom is still here".
Not just anyone could refine Kingdoms as they wished.
There was a limit to everyone's Kingdoms' territories. It depended on the foundation when one consolidated their Kingdom in the beginning.
Therefore, there was a limit to the Kingdom that one could refine and integrate.
Meanwhile, White Brow's Kingdom was close to the strength limit of major dao-level powerhouses.
Most major dao-level powerhouses could not refine such a Kingdom at all.
To a powerhouse like Xia Bing, although she could refine it, she had to have refined many Kingdoms to have been able to cultivate to this level, so her Kingdom should have reached its limit and she could no longer integrate any more Kingdoms.
Therefore, to most people, White Brow's Kingdom was useless.
