• 七(number seven; seven (pictographic—horizontal stroke crossed by curved stroke))

The number seven is drawn with a horizontal stroke and a curved stroke crossing through it, symbolizing division.

• 八(eight (pictographic, two strokes separating))

Two strokes separated apart like two objects dividing represent the number eight.

• 糸(silk thread; filament)
• 龶(coarse undyed thread bundle; top part of thread)

Raw silk that hasn't been dyed suggests the meaning of pure, simple, and basic.

• 七(number seven; seven (pictographic—horizontal stroke crossed by curved stroke))

The number seven is drawn with a horizontal stroke and a curved stroke crossing through it, symbolizing division.

• 八(eight (pictographic, two strokes separating))

Two strokes separated apart like two objects dividing represent the number eight.

• 糸(silk thread; filament)
• 龶(coarse undyed thread bundle; top part of thread)

Raw silk that hasn't been dyed suggests the meaning of pure, simple, and basic.