藏宝图

• 艹(grass; plant)RADICAL
• 臧(hidden; good)PHONO-SEMANTIC

Grass and plants covering on top help conceal everything below.

• 宀(roof)RADICAL
• 玉(precious jade; gem)ASSOCIATIVE

A treasure is a precious jewel carefully kept hidden in the house.

• 囗(surround; square frame)RADICAL
• 冬(winter)PHONETIC

A map is a frame enclosing all regions of land, and when read closely sounds like "dong" (winter).