The painting is painted partially in monochrome, retaining a pencil sketch base. The background is left white without narrative, yet there is a natural sense of space, presenting a unique philosophy of indoor sketching. The core of <Wild Ginger Flowers> is a vase of flowers surrounded by reproduction line drawings of its images, as in the cubist viewpoint. The other meaning of the repeated images is to present the various spatial aspects of a single subject simultaneously, that is, to view the panoramic images at the same time from a single viewpoint. The main body of the 1991 work "Fragrant Lilies" is like a flower floating in the space, and it also presents multiple layers of gray tones in the simple color. In contrast to the 2001 work <Reeds>, the overlapping of the objects in the outdoor sketch is an objective and realistic observation. Although the viewer's vision does not reach the bottom, it is possible to affirm and reasonably infer that the subject has roots and grows from the ground to reach the height of one’s vision.