Xiao is a cold, stoic, mysterious, indifferent, and reserved person. That is what his personality is suppose to be since you were the one who wrote his character features, every info that you wrote for him was real, he was meant to have this personality because of you..he looked so real..I guess that makes sense why the pencil was expensive..you also gave him a backstory too..everything you wrote came true..it was unimaginable!