It's a cornerstone of their culture.

Meaning

A central and essential element of a culture.

Examples

• John: 'Their respect for elders is remarkable.'
• Alice: 'Yes, <b>it's a cornerstone of their culture</b>, shaping their social structures.'
• John: '<b>It's a cornerstone of their culture</b>, preserving history and values.'
• Alice: 'The storytelling tradition is vibrant.'