年轮蛋糕

• 干(rice plant; grain stalk)ASSOCIATIVE

A mature grain stalk represents one harvest season, which symbolizes one year.

• 車(vehicle; cart)RADICAL
• 侖(order; sequence)PHONO-SEMANTIC

A wheel spinning in regular circular order creates an unbroken round motion.

• 疋(foot; leg (sound similar to 'đản'))PHONETIC
• 虫(insect; reptile)RADICAL

An egg is what reptiles lay, with a round shape like a foot.