Subject: Two lychees, lychee branches and leaves, outlining their forms and textures using green and red point and line techniques. Scene: Pure still-life close-up, depicting the lychee's own form and the details of its branches and leaves. Style: Pen and ink drawing style, using point and line techniques, extremely fine and realistic, densely interlaced line arrangements, full of natural vitality. Tone: Dominated by green lines and red lines, pure line monochrome outlining, with no large-area color filling. Lighting: Relying on the arrangement, interlacing and direction of fine and short pen lines to shape light and shade levels, expressing three-dimensional texture based on form structure. Composition: Focusing on the depiction of the lychee subject, with line directions fitting the natural forms of the fruits and branches and leaves. Purpose: Pen and ink still-life sketch, lychee-themed art illustration, fine-line hand-drawn creation.