Additionally, because Yoshitaka was enthusiastic about learning and art, and also because he permitted Christian missionary work and voluntarily protected kuge (court noble) and missionaries, a unique culture of Yamaguchi (Ouchi culture) was born in the territory of Ouchi family, which led to a height also in terms of culture.
また義隆が学問・芸術に熱心で、キリスト教布教を許し、公家や宣教師を積極的に保護したことから、大内領内には独特の山口文化（大内文化）が生まれ、文化的にも全盛期を迎えた。