红灯区

• 糹(thread; silk fiber)RADICAL
• 工(craftsman; work)PHONO-SEMANTIC

A thread dyed by the craftsman becomes bright red.

• 火(fire)RADICAL
• 丁(nail; peg)PHONETIC

A lamp uses fire to shine brightly, and its sound reading is suggested by the component ding.

• 匸(box; frame cover)RADICAL
• 乂(trim; manage)ASSOCIATIVE

A frame that encloses and divides space to organize and manage everything within it.