Starting from the tip of the bow, divide the bow into four sections: A, B, C and D. A-B: upper bow, B-C: middle bow and C-D: lower bow. D is the end of the vault. Sing in your mind by shaping the phrase and decide where the first sound of the phrase begins. In order to make everyone understand better, I use the name of the railway station to indicate the distribution of bows. A is Beijing, B is Shanghai, C is Nanjing and D is Guangzhou. The first sound of the phrase begins in Nanjing. Take the light rail to Shanghai. Between the bridge and the fingerboard. The feeling of skating. The fingers of the left hand twitched. The second bow has five tones, from Shanghai to Guangzhou. Trains are heavy trucks. Bow and pressure-their own strength. The bow speed is the same as that of a truck. I can't walk fast, so my weight makes my bow hair press on the bow rod. The left hand often twitches. The last two sounds are very short, from Guangzhou to Nanjing, and then from Nanjing back to Guangzhou. The contact point of the bow is near the fingerboard, and the left hand trembles and drives the finger with the arm. The swing is almost invisible. The power of a bow is like a dragonfly. )。 The bow of the last phrase is a group of sounds from Guangzhou to Beijing. Use light rail. Skating feels like a bow.

The picture above is singing flowers with a pen. This sentence (drawn in my mind later) is just a metaphor.

Each contact point of the bow feels as described above. There is also the coordination of the left hand when pronouncing, the feeling of bow speed, and pressure. The above techniques will be used to change the pressure, bow speed and contact point. You can express the yin and yang of this phrase. Class one, use a long bow for long sounds (Beijing to Guangzhou) and a short bow for short sounds. Beijing to Shanghai, Nanjing to Guangzhou, Shanghai to Nanjing. But there are also phrases with long notes and short bows. (bow speed is slow, close to the girl. Add pressure).