Questionnaire for Chinese learning APP user

Hi, thank you very much for taking time to participate in this questionnaire. I am a graduate student in the School of Management, Jinan University. This questionnaire is based on the 4C marketing theory to understand users' demand for Chinese learning apps, and to explore the marketing factors that affect Chinese learning apps. This questionnaire is anonymous. The data collected will be used for academic research only. Your personal information will not be disclosed or used for other purposes. Please feel free to fill in according to the actual situation and real idea. Thank you for your cooperation and support!