The winter holiday of 2020 was particularly long due to the COVID-19. However, the teachers and students of 'Keys of Joy' music classroom had a fulfilling holiday in the company of music. A series of live online lectures helped the teachers improve their teaching. Continuous online music teaching helps students continue to improve.

During the suspension of classes, Lang Lang Arts Foundation, together with Steinway, an international famous piano brand, organized teachers to participate in a number of live online lectures by famous musicians, making full use of the holiday time to help teachers develop their teaching ability. A number of music masters shared their teaching experiences and interacted with the teachers online. The program teachers actively participated in the online learning and benefits a lot from the communication.

Not only the teachers, but also the students of 'Keys of Joy' program also insisted on practicing piano during the holidays. In order to guide students to play the piano continuously and consolidate their basic skills, the music teachers of Hangzhou Wenyuan Primary School developed a 'teaching and practice' dual piano online learning mode.

The teachers recorded the demonstration performance to explain the important knowledge points so that the students could practice at home. Students submitted video homework every day. By requiring parents to shoot videos of students playing music from multiple angles, teachers could see the hand shape and listen to the rhythm accurately, which 

guaranteed the quality and effectiveness of online learning.

On the basis of the regular basic skills, the teacher carefully selected the music to arouse the students' interest in learning. Through the 'cloud cooperation' between teachers and students, the students' mastery of rhythm and intonation was greatly improved. In order to play together with the teacher and classmates, the students practiced the piano more conscientiously and happily at home.