Pinyin "er4"

In MandarinBanana's mnemonic system, the Pinyin syllable "er4" is split up into two parts: "Ø" and "Ø4". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.

Mnemonics for Pinyin initial "Ø"

"Ø" (nothing or null) is for Albert Einstein.

Mnemonics for Pinyin final "Ø4"

In the space station's bathroom.

Characters pronounced er4

two / 2 / (Beijing dialect) stupid

= : Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).
archaic variant of 貳|贰, banker's anti-fraud numeral two
two (banker's anti-fraud numeral) / to betray

= + + : When St John saw Albert Einstein (Ø) shoot capacitors (二) at a crab (贝) with a bow (弋) in the space station's bathroom (Ø4), he handed him his second epistle (贰, 约翰贰书) telling Albert that he feels betrayed (贰).
Japanese variant of 貳|贰[er4]
numeral 2 in Suzhou numeral system 蘇州碼子|苏州码子[Su1 zhou1 ma3 zi5]
cutting off the ears as punishment
space between mouth and ears
acid variety of jujube plum
the blood of a sacrificial fowl which was sprinkled on doors and vessels