Lecturing was an art that required the following points: 1. Target audience: Understand the needs and interests of the audience in order to match the teaching content with the needs of the audience. 2. Design teaching content: Design teaching content according to the needs and interests of the audience, including selecting appropriate teaching materials, teaching methods and teaching tools. 3. Focus on interaction: Lectures should not only impart knowledge but also focus on interaction with students to encourage students to ask questions and participate in classroom activities. 4. Practicality: Teaching content should be practical and help students apply what they have learned to real life. Keep it simple and clear: The teaching content should be simple and easy to understand, avoiding being too long and abstract. 6. Focus on inspiration: Teaching content should focus on inspiration to stimulate students 'thinking and creativity. 7. Continuous reflection and improvement: During the lecture, you should constantly reflect and improve your teaching methods and content to adapt to the changing market demand and student needs.