(arch. introductory particle) / then / and then
聿
=
二
+
肀
:
Mnemonic symbol: a broad decorator's brush.
Yu the Great (yu) is painting in the space station's bathroom (Ø4). First she paints backgrounds with a decorator's brush (聿), then applies some details using a crayon (肀), and finally she discharges a capacitor (二) on the canvas for special effects.