To be honest, Mu Ying couldn't shake a sense of familiarity upon considering this speculation.
Hadn't she done the same thing?
In the beginning, to hide her identity as a noble Lord, she'd rented out Tree House No. 1 to Oak Grocery and then rented No. 2 for herself, disguising herself as an ordinary tenant.
If there was no deeper Royal Tomb layer here, then if the Queen of Guland had prepared a tomb for herself, it might also be on this level or deeper down.
The Guland Underground City thrived for thousands of years, and its sole ruler was always the Queen of Guland; she must have been quite young at the start, at least in her prime.
A young woman in her prime wouldn't hastily reserve a tomb for herself during the early development stages of the Underground City, right?
Even if she had the same concerns about her identity as Mu Ying did, she wouldn't have tampered with the tombs so prematurely.