1) Japanese, it's a survival skill for me now, moved to Japan a little bit more than a year ago, only to find out my friend lied to me, they don't speak English

1) Japanese, it's a survival skill for me now, moved to Japan a little bit more than a year ago, only to find out my friend lied to me, they don't speak English here; 2) C/Rust, career development requirement, we have some codebase without maintainer, I want to take them over; 3) Deepen my knowledge in cognitive sciences, explore memory and attention.