In order to popularize plant knowledge and promote students to walk into nature and understand trees, the School of Life Sciences of Jiangsu University organized students to carry out a "Tree listing" activity on March 30. In the early morning, the sun shines on every corner of the campus, and the students who participate in the activity gather at the entrance of the college early, wearing uniform vests, and their faces are filled with anticipation and excitement. Under the leadership of the teacher, everyone received tools and made signs in an orderly manner, and then went to all corners of the campus, and began the journey of intimate contact with the trees. At the activity site, the students had a clear division of labor and tacit cooperation. Some hold a tool, and carefully hang the sign in the right position to ensure that it is eye-catching and does not affect the growth of trees; Some seriously explained the types, habits and growth environment of trees to the students. Every tree seems to become their "classroom", so that they learn in practice and grow in exploration.