Che Xiayuan, I believe all our teachers have written observation records, and they are very aware of the importance of observation. In the book How to Improve the Professional Ability of Preschool Teachers, Professor Hu Yongping proposed that observation is the basic skill of Preschool Teachers. Montessori, a famous educator, said: Only through observation and analysis can we truly understand children's internal needs and individual differences, so as to decide how to coordinate the environment and adopt an appropriate attitude to meet the needs of children's growth.