综合业务数字网

• 亼(gather; converge; cover up)ASSOCIATIVE
• 口(mouth; box)RADICAL

A lid sealed tightly over a box's mouth combines into one whole.

• 業(work; career; undertaking)ASSOCIATIVE

A wooden rack for hanging musical instruments evolved to mean profession or work.

• 娄(many times; piled up)PHONO-SEMANTIC
• 攵(tap; hand motion)RADICAL

Counting numbers is using your hand to tap repeatedly many times in order to calculate.

• 宀(roof)RADICAL
• 子(child)ASSOCIATIVE

A child born under a roof and learning to speak gives rise to written characters.

• 糹(silk thread; filament)RADICAL
• 罔(net; without)PHONO-SEMANTIC

Silk threads woven together form a net to catch fish, just like a network that spreads everywhere.