Mnemonic symbol: a balloon. The Queen of Hearts is disappointed by her balloons. She expected them to float upwards, but in the space station's bathroom, They float randomly in all directions.
田
=
囗
+
十
:
Mother Teresa (ti) wants to plant a field (田) of crosses (十) in the anthill's kitchen (an2). She ordered an enclosure (囗) full of crosses (十) and puts them up one by one.