The "kui" tone is marked above the "i".

According to the query on iAsk Education and Training, the tone of "kui" is marked above the "i". Pinyin tones refer to the tones in Mandarin, usually called four tones, namely Yinping (the first tone), which is represented by "ˉ", the second tone of Yangping, which is represented by "ˊ", and the upper tone (the third tone), which is represented by "ˇ" " means that the missing tone (the fourth tone) is expressed by "ˋ".

Tone refers to the change in the tone of language. In modern Chinese phonetics, tone refers to the pitch of sounds inherent in Chinese syllables that can distinguish meaning. The scales in music are also determined by pitch, which can be simulated by using scales. You can also learn tones with the help of your own sense of music. But it should be noted that the pitch of the tone is relative, not absolute; the change of tone is sliding, not like a leaping movement from one scale to another. The level of the tone is usually marked using the fifth-degree marking method: a vertical mark is set up, divided into 5 degrees in the middle, with the lowest being 1 and the highest being 5. Mandarin has four tones: Yinping, Yangping, rising tone and falling tone.