儿童蜡笔画风格爵士乐节奏教学

Create a cheerful children's crayon drawing on white paper in a 16:9 frame, like a hand-drawn educational video keyframe about jazz rhythm. At the top, write a large colorful Chinese crayon headline in two lines: {argument name="headline text" default="爵士乐为什么要打2、4拍?"}, with each character in a different bright color such as purple, blue, red, green, yellow, and cyan, slightly uneven like a child wrote it. In the center-left, draw one smiling cartoon child with a round head, spiky black hair, huge circular eyes, a wide open magenta mouth, stick arms raised happily, a blue scribbled shirt, thin brown stick legs, and purple shoes. On the center-right, draw one black grand piano in rough crayon lines with its lid open, yellow scribbled strings inside, four visible legs, a keyboard showing 7 white keys and 5 black keys, and 3 small yellow pedals beneath it. The child reaches toward or plays the piano, creating a cute beginner music lesson feeling. Add a bold subtitle near the bottom over the drawing reading {argument name="subtitle text" default="我们确认一下打节拍的意义"}, styled as thick white Chinese characters with a dark blue outline and yellow emphasis on the first two characters. Use messy wax-crayon texture, simple childlike proportions, imperfect perspective, bright primary colors, and lots of visible scribble strokes; keep the background plain white with no extra objects.

在 16:9 的画幅中创作一幅白纸上的欢快儿童蜡笔画，呈现出类似手绘爵士乐节奏教学视频关键帧的效果。在顶部用两行色彩鲜艳的蜡笔字体写出中文大标题：{argument name="headline text" default="爵士乐为什么要打2、4拍?"}，每个字使用紫色、蓝色、红色、绿色、黄色和青色等不同的明亮颜色，字迹略显不工整，如同儿童亲手书写。在画面中左侧，画一个微笑的卡通儿童，圆圆的脑袋，黑色尖刺状头发，大大的圆形眼睛，张开的洋红色大嘴，手臂开心地向上举起，穿着蓝色涂鸦衬衫，细长的棕色火柴腿，脚穿紫色鞋子。在画面中右侧，画一架用粗犷蜡笔线条勾勒的黑色三角钢琴，琴盖打开，内部有黄色涂鸦琴弦，可见四条腿，琴键显示 7 个白键和 5 个黑键，下方有 3 个黄色小踏板。儿童伸手触碰或弹奏钢琴，营造出可爱的音乐启蒙教学氛围。在画面底部附近添加一个醒目的副标题 {argument name="subtitle text" default="我们确认一下打节拍的意义"}，采用粗体白色中文字符，带有深蓝色描边，前两个字有黄色强调。使用凌乱的蜡笔质感、简单的儿童比例、不完美的透视、明亮的原色以及大量可见的涂鸦笔触；保持背景为纯白色，不要添加额外物体。