level 8. By inquiring about the complete collection of guzheng songs, we know that become a butterfly is a zither of Grade 8, which is a great test of fingering. Guzheng, a plucked string instrument, also known as Han Zheng and Qin Zheng, is an ancient national musical instrument of the Han nationality, which is popular all over China. After thousands of years of development, Hakka Zheng, Chaozhou Zheng, Shandong Zheng and Henan Zheng have been formed.