Mirror of truth

Solid foundation of four meets adventurous spirit of five, creating a platform for seven's deep knowing. Number of practical explorers: they build systems, test boundaries, seek truth through experience. Architects and scientists.

Four 四 (sì) brings death's weight, but five 五 (wǔ) — Wu Xing center — revives energy. Seven 七 (qī) as 'rise' 起 transforms obstacles into growth steps. Number of overcoming through action.