That's octive scale which is very common in western music. that's like why you want to raise a semitone on the 7th notes in minor scale, is their music format

for tradition chinese music, there is only 5 tone, do re mi so la, there is no semitone in chinese tradition music, like the famous folk song jasmine flower, the song only made up from 5 tones only

in modern music, actually there is whole tone scale, where that is rarely in use, the scale form look like C, D, E, F#, G#, A#, C