The word for chicken is written as "鸡" in simplified Chinese. Oddly it has two Traditional Chinese forms, as either 雞 or 鷄. The 雞 form is far more common (in Taiwan, Hong Kong, and other places that use Traditional Chinese characters), but 鷄 is sometimes used for more 'artistic'/'marketing'/'literary' effect because it has the "bird" 鳥 radical on the right.

鷄 is also the Japanese kyuujitai (old form) kanji for "chicken". The current simplified Japanese "new form" is 鶏, which may look deceptively similar to 鷄 for Chinese readers.

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姫/姬 means "imperial concubine" in Chinese, and can also be used as an appellation for "beauties", even if they are not concubines. It was also used as a euphemism for a wide variety of... unsavory professions, by extending the 'concubine' sense of its meaning. This is unrelated to 妓 ("prostitute", ji but different tone, which 鷄/雞/鸡 is also used as euphemism for), though they can often be overlaps when 姫 and 雞 are used euphemistically.

In current modern Chinese, 姫/姬 is rather obscure and infrequently used (in its original sense). Younger Chinese speakers who regularly view Japanese media may have a tendency to associate 姫/姬 with the Japanese use of 姫, so 姫/姬 now has also acquired a new meaning of "princess" or "high-born lady" in Chinese, particularly on online speech and in certain (Japanese and Japanese-influenced) games and other media. The Chinese Kancolle fanbase being one of them.

And yes, they are a lot of Chinese webnovels now that like to use 姫/姬 for "high-class lady" names and titles. Sometimes it turns into unintentional hilarity though. There was a recent Chinese web novel with the main character called 姫白 (intended to mean "Princess White", I guess), which, for Southern Chinese speakers (Mandarin or otherwise), will sound pretty much the same as the infamous swearword for the lady bits.