English: Bach's 2-parts and 3-parts inventions are always the most hard job for piano students in Yixuan's age - only 9 years old. Usually, space-dimensions in music cannot be formed and imaged out. Meanwhile, the flexibility and controllability of two hands aren't stable. However, Yixuan, Wang (Direct translation of her name: a girl who has the gracefulness and artist fashion was from Wang family) has shown her hard-working and perseverance in facing the challenge and taking this life-task of No. 8 2-part Invention. Thanks, though some small faults could have been found somewhere in her first draft... 'Yixuan, you have attempted your best... great!' I knew it. In future, she may try to do more exercises in the moving flexibility of the third, fourth and fifth fingers... Waiting better edition would be found, we will up-grade it soon...