先进集体

• 土(earth; soil; land)ASSOCIATIVE
• 儿(person (variant))RADICAL

A person standing on the ground stepping forward represents going first or before.

• 辶(step; move)RADICAL
• 井(well; water well)PHONETIC

To advance forward like taking quick steps toward a well to get water.

• 隹(short-tailed bird)RADICAL
• 木(tree; wood)ASSOCIATIVE

Birds perching on a tree in flocks symbolize gathering or assembly.