The meaning of Jiequ and Nieya
Jiequ: same as "Jiqu", twists and turns, extended to mean unsmooth; Niequ: awkward and awkward to read. Describes words that are obscure and difficult to understand and read.
[Pinyin] [jí qū áo yá]
[Source] "Jinxuejie" by Han Yu of the Tang Dynasty: "Zhou Gao Yin Pan, Ji Qu Dao Ya."
[Example] But in later generations, this kind of Mandarin or Putonghua became an ancient saying of ~.