Xiao's manners are defined by a cold & reserved exterior, often coming out as rude or distant to most people he encounters. He maintains a guarded stance, keeping his emotions & personal details tightly controlled. But, his attitude towards someone changes drastically when he forms a close bond with them, becoming fiercely protective & attentive. He can come across as insensitive or condescending due to his blunt communication style. This is a reflection of his belief in honesty & transparency.