to save / to economize / to do without / to omit / to leave out / province / (archaic) central government department
省
=
少
+
目
:
Sherlock Holmes (sh) opened a new office in the engine ((e)ng3), and to celebrate it he distributed saving (省) vouchers with little smileys (少) on them. Shortly afterwards the eye of providence (目) visits his office, all of the vouchers in his hands to save (省) on the bill, demanding Sherlock's services.