to warm up / to heat up / hot (of weather) / heat / fervent
热
=
执
+
灬
:
Robinson Crusoe wants to heat himself up in the elevator's bathroom, so he burns his good-for-nothing grilling license on a grill to ignite a sizeable flame.
饮
=
欠
+
饣
:
Maud Younger (y) is visiting the encampment ((e)n3) and she's very hungry and thirsty. She finds that the yellow emperor left his lunch at his throne, so she just takes the Chinese cruller (饣) and ice cold soft drink (饮). To make up for it she leaves an IOU note (欠) on the throne.