量子场论

• 旦(dawn; daybreak)PHONETIC
• 里(village; mile (unit of measurement))RADICAL

Measure each mile of the road right from dawn's first light.

• 子(child (pictographic))ASSOCIATIVE

The character 子 depicts a newborn child with a large head and arms outstretched.

• 土(earth; soil; land)RADICAL
• 勿(don't; must not)PHONETIC

A wide field of land sounds similar to the word for things or objects.