The Pinyin final "ou4" is used in the second half of Pinyin syllables. In MandarinBanana's mnemonic system, the second half of a Pinyin syllable is always represented by a location. You can visit the Pinyin index to see all Pinyin syllables from this mnemonic group, or to see all Pinyin syllables "ou4" can appear in.
Inside the blue plastic outhouse, the small bathroom is utilitarian and compact. The molded plastic walls curve inward, their bright blue color lit by a shaft of daylight through a tiny vent. A simple seat, footrest ridges, and a dispenser are neatly built into the structure, giving it a clean yet temporary, portable feel.