Below, I will share my insights in each section.

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Section 1: Traverse the main notes, including 3 to 5 to 7, 5 to 3. If there are lumps in this section, then don't pull back, just get familiar with what he thinks is the simplest section first. If there are lumps in this section, don't play any music anymore. First, stand here and practice your basic skills. Playing music is just nonsense and messy

All practicing with metronome, at the beginning, the first note of the fourth beat, g, I couldn't even hit the beat point. My feeling is like being shot, knowing that the gun is about to fly over at that moment. As long as I prepare my movements in advance and hide in the corner of the wall on time, I can perfectly avoid the gun, but I just need to slow down and let the gun hit me. At first, I didn't quite believe how this happened, but later I realized that my downward movement to change the handle was so dirty, slow, chaotic, and inaccurate. My brain had to deal with such a large pile of junk in order to make the change effect slightly better, and I didn't have time to take care of the things that came flying by with the gun. So in the fourth shot, I pulled it out slowly.

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Sections 2-5: Very difficult.

Difficulty 1: The first section is a 4-point beat, and the second section immediately becomes a 3-part beat (3-part beat per beat). The painless transition of this rhythm allows you to know how low-end your "music literacy" is with just one pull of the electronic metronome.

Difficulty 2: Continuously switch between 3 and 7 handles, and practice switching the rising and falling sounds of each finger inside the 3 and 7 frames, with the rising and falling sounds being the leading or target sounds, during the switch of handle positions between 3-7 and 7-3 frames.

Difficulty 3: Section 4 is particularly difficult. The first bow has 3 consecutive notes, and the second bow has recovered to 4 beats, all of which are rising and falling notes. It is a triple blow of rhythm conversion, accuracy of handle switching, and accuracy of rising and falling notes (auditory response). In the fifth section, the first bow continues this attack, while the second bow gives me a chance to catch my breath and take a break.

I will first pull these sections on lines G and D, without changing the handle. Today, when we were all pulling on the G string, I understood his design purpose and intention. Everyone must use a separate G string, switch handles, and rub their fingertips to pull. This is what he wants us to practice, don't lower the difficulty. The D string is only for transition, and it needs to be practiced in a separate G string in the end.