na-adjective, noun which may take the genitive case particle 'no', taru-adjective, adverb taking the 'to' particle, noun
unchanged; stuck in old ways; none the better for change
yojijukugo (four-character idiom)
Describes a situation, system, or person that remains exactly as before, often with a negative nuance of being outdated or resistant to improvement. Used as a な-adjective, の-adjective, or adverbially with と.