"Interesting!"
Muria was walking on a country lane, with humans farmers sowing seeds on both sides of it. It was only then he remembered, based on the early human calendar, that it was currently the season for spring ploughing.
He carefully observed the human commoners farming by the road. The faces of these farmers still showed signs of hunger, and most of their clothes were worn and ragged, basically, just a few patches of cloth roughly sewn together.
Moreover, Muria saw residual whip marks on these farmers and traces of handcuffs and shackles on their hands and feet. However, these farmers wore smiles on their faces, their faces expressing anticipation for tomorrow, and their eyes were full of spirit.
"Slaves!" From the residual traces on these people, Muria quickly judged their previous identity. Ordinary humans with traces of handcuffs on their hands could only be slaves.