Did you mean: jingyan jinxian jinshan jinjian jinqian jianshiyan ?
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jīn sī yàn | Aerodramus, genus of birds that use echolocation, a subset of the Collocaliini tribe (swiflets), two of whose species – Aerodramus fuciphagus and Aerodramus maximus – build nests harvested to make bird's nest soup |