When someone actively approached Lu Shu, he would not treat them as an unrelated stranger. He would subconsciously think that they belonged to a slave owner and tried to deliberately approach him.
It would be easy to recognize them if the mark of a slave was on their necks or hands, but some were hidden. They could not be seen when one was clothed. Lu Shu knew that some marks of a slave were on the buttocks… of course, he had not confirmed this with anyone…
Lu Shu could not be blamed for being overly suspicious. He had a cautious personality. Recently, many people deliberately approached him. In the past, many people he thought he had met by chance all had their own aims. No matter whether their aims were good or bad, he felt uncomfortable.
But this was also one of the reasons why he wanted to solve this problem once and for all. He could not be on guard his entire life. It would be very tiring.