 The theory is disputed as the geographical location of Jambi contradicts the descriptions by Yijing, who explicitly mentioned that the kingdom is located half-way between "Ka-Cha" (Kedah) and "Bogha" (Palembang)".The origins of the word "Melayu" ('Malay') are disputed.One theory suggests that it is derived from the Javanese terms "melayu" or "mlayu" (to steadily accelerate or to run), to describe the strong current of a river in Sumatra that today bears the name "Sungai Melayu" ('Melayu river').