To begin with, in the depths of the season, we encountered the beauty of April. What’s more, students learnt about the impact of biodiversity on human beings during the lecture in that we cannot protect the ecological environment without human beings. Meanwhile, students realized that every kind of life can't be ignored, who repeatedly marveled at the magic of life, expressed one after another that they would protect the green mountains, build a better home, start from small things, work together, and strive to be the little guardians of environmental protection!