to go forward / to advance / to go in / to enter / to put in / to submit / to take in / to admit / (math.) base of a number system / classifier for sections in a building or residential compound
进
=
井
+
辶
:
Joan of Arc fell into a well after she entered the encampment's bathroom, but luckily one of her gladiator sandals got stuck on one toilet, so now she can use the string to climb out of the well.
to retreat / to decline / to move back / to withdraw
退
=
艮
+
辶
:
Tommy Turtle (tu) recently retired (退) and retreated (退) into the Eiffel Tower's bathroom (ei4). There he just wears gladiator sandals (辶), blows chewing gum bubbles (艮) and ponders the sense of life.