Some mobile apps - developed to reduce teachers' workload and improve students' learning efficiency - were on people's minds, generating discussion about their growing usage.

Chinese teachers and students are known for maintaining a heavy workload and diligence in education. Research conducted by Knowbox, a K-12 Internet education company in Beijing, found that each Chinese primary or middle school student has to spend at least one and a half hours a day working on an average of 30 assignment questions.

And teachers have to spend around two hours, or one-fourth of their work time each day, grading these questions, according to the company's research.