琪 (qí) refers to a type of fine jade in classical Chinese literature. In modern usage it is a bound form (b.f.), meaning it cannot stand alone and appears only within compound words or as a character in given names. You will encounter it in literary terms like 琪花瑶草 (qí huā yáo cǎo, 'jade flowers and jade grass' — mythical vegetation) and in personal names where 琪 carries connotations of preciousness and beauty.