Since 1985, his work has oriented itself essentially around the immortalization of pine tree forests typical of Korea. The pine tree is a culturally significant tree in Korean culture as it's considered a symbol of longevity. According to him, "pine trees are symbols of the souls of the Korean people." Bae sees in a pine tree a contact between the sky and the earth. It succeeds at freezing on paper all the drama and magic of this mythical place and the vital energy of the trees in order to resituate them in intense meditation.