容

The roof radical anchors the meaning - 容 is fundamentally about a space that holds things. The radical groups 容 with the family of dwelling and containing words: 室 (room), 宫 (palace), 富 (rich), 安 (peace), 守 (guard). A house contains its inhabitants, possessions, and air.

The 谷 (valley) component below the roof creates the compound ideograph: 'a house as vast as a valley' = capacious, holding much. Valleys are the largest natural containers - they hold rivers, forests, entire ecosystems. From physical 'contain' came 'tolerate, allow' (give room to) and 'countenance' (the face that holds expression).