A has a deposit and a job. From the outside, it is the kind of person with low desire.
He doesn't buy a lot of clothes in a year, and the upgrading of electronic products seems to have nothing to do with him. He rarely drinks alcohol, and he does not talk about it at parties.
He is not isolated character. On the contrary, he is gentle with people around him, but not very close. There is a subtle feeling of distance control.
He rarely talks about himself and he is single.
But A has a secret hobby, what is this hobby?