As follows:

The movement of adjacent sound levels is called step-by-step, the movement of relative sound insulation level is called jump, 1-2 degrees is called step-by-step 3 is called small jump, 4 degrees is called jump within 3 degrees, and 5 degrees is called big jump. These movements should be avoided as far as possible in the internal voice, because the internal voice generally has to follow the criteria of smooth progress in tradition and acoustics.

If it happens occasionally, you should be careful about the situation where the four parts are in the same direction. However, in some modes, 3 degrees may be considered as jumping, such as pentatonic scale, depending on the specific situation.

arranging musical notes in high and low order is called "musical sequence". Each tone in a series is called a "scale". Tone level is the unit that divides the intervals between tones in a scale, that is, each independent tone in the musical system.

a scale is a set of musical sequences whose pitches are arranged in sequence according to a specific law. The concept of scale can be traced back to the mode of plainsong or Eryiluo hymn in the Middle Ages, which was used to highlight a certain quality or sound quality of music. Later, after continuous evolution, the concept of scale was gradually established. The scales that most people usually know are major scales and minor scales.

They are all made according to a specific arrangement. However, the major and minor tones can also be changed in order, and this kind of variation is also rich in elements of ancient modes.