At the beginning of the course, I participated in the course with excitement and nervousness. In the course, I found that several professors were very friendly and lovely. They patiently solved the students' problems and responded to each student's bullet screen. This kind of interaction mode has brought us great course experience!

The two courses in the holiday are World Social History and Environmental Literature and Culture. First of all, let's talk about the insights brought by the course content. The first course let me learn to analyze the trend of world history, and with a general understanding, learning world history will be as clear as a cook. At the same time, this course also made me interested in learning history. The second course is explained to us by a very lovely female professor. She will show interesting photos she took in her life in the courseware, and then let everyone analyze them together. She will also add interesting videos in the course to make the course more interesting. After studying environmental literature and culture for a holiday, I have a new understanding of resources and environment, and a deeper understanding of environmental science and engineering. The teacher's teaching made me more interested in this major. In my opinion, the generation of resources and environment is a deepening of people's understanding of natural resources and environmental resources. Almost all natural resources constitute environmental factors for human survival. This course really made me realize that there are many environmental problems around the world, and what we can do is to reduce environmental pollution and protect the environment well. Secondly, I am a business English student. This course is taught in English, so I didn't slack off on my English study during the holiday. "It's only a matter of time to learn from paper, but it's a matter of practice!" In this short time, I deeply felt the lack of professional knowledge I learned in practical application. Let me really understand the meaning of the sentence "learning is endless". In the process of practical training, I learned how to apply and practice professional knowledge in real life. In these processes, I not only understood the professional knowledge required for my career, but also further enhanced my practical experience in English and improved my English ability in many aspects. People are not born with knowledge. Although there are still many deficiencies in my knowledge structure at the moment, I understand that the knowledge to learn depends on hard work and concentrated practice. Without practice, learning is water without a source and a tree without roots. Through this course, I have strengthened my English ability. After several exercises in recent years, I have gained a lot of knowledge and found many deficiencies through the teacher's hard teaching and ordinary unremitting efforts. In the future, I will urge myself to study English more strictly.

In the end, I would like to thank the school and teachers for giving me the opportunity to learn this free course, and thank the teachers for their supervision and encouragement in the course and the help of other students.

撰稿人：栾顺毅；审稿人：安蕾；终审：门辉华