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The surnames of those who are in the Back Hill build together an idiom 风花雪月, «four opposites of love». Although hieroglyph 锋 in word "Wufeng" is different from one in this idiom (风), they are homophones that equally sound fēng (and as we all remember, Wufeng is the mastermind of the last three saber techniques out of twelve used by the Back Hill, sooooo...🐱👤).
2. The names of Wufeng ranks build together an idiom 魑魅魍魉, «demons and monsters of the Martial World». These hieroglyphs actually mean three types of mythological Chinese monsters, not four: chī, mèi, and wǎngliǎng. In the last word a syllable wǎng (魍) sounds like wáng (王), which means "prince", so there are four princes of cardinal directions in Wufeng. The hieroglyph 魉 (liǎng) includes the phonetic key 两 (liǎng) as one of its elements, which means "a pair". And, as we know, Wufeng has got two bosses of the highest rank 🐱👤.
3. The names of those who live in the Front Hill are 宫商角徵羽, the pre-Tang dynasty names of tones in the pentatonic musical scale. The pentatonic scale is famous among musicians as something good for improvisation because all of these tones sound harmonically in any combination. Also, in the Confucian tradition these five tones were credited with a magical effect on society, at which gōng corresponded to the emperor, shāng - to ministers, jué - to the people, zhǐ - to affairs, and yǔ to material resources.
Maybe it all supposed to have a deep meaning and to symbolize something. Maybe it didn`t. Anyway, there are just fun facts.