落成 (luòchéng) · to be completed (building)

落 luò · to fall

What 落 is made of

• 艹cǎo — grass
• 洛luò — a river in the Shanxi province
  • 氵shuǐ — water
  • 各gè — each
    • 夂zhǐ — to go
    • 口kǒu — mouth

Origin hint: 艹 gives the meaning, 洛 gives the sound. (from the Make Me a Hanzi dataset; treat as a memory aid where history is uncertain)

成 chéng · to become

What 成 is made of

• 丁dīng — male adult
• 戈gē — spear