程亚杰不断创新和改变着自己的艺术风格，从其速写作品的多样性可见一斑，“线条”速写，素描，彩笔速写，“点彩泼墨“速写，“底纹”速写，“彩色”素描，“符号数字彩蝶”速写，“石版画”速写，油画速写。

　　动态速写技术是画家成熟的标志，人体的动态速写要求画家不但人物速写，还要具备较高的造型能力和整体意识，具有敏锐的感受能力和熟练运用解剖知识的经验。程亚杰动态人物速写艺术首先是对动态的“选定”和感受及记忆能力超群，把最有造型意义的瞬间动态“造型性”和最具的瞬间美感“唯美性”完美结合，锁定在画面中。其次是对“动态线”即对人体中表现动作特征的主线的把握炉火纯青，使人物的动态的表现和空间感表现的恰到好处。

　　2015年程亚杰的速写艺术是丰富多彩的，中国的工笔功夫和欧洲造型训练，使程亚杰的速写变化多端，出人意料。

　　《三分钟速写——月亮悄悄地溜走》《月儿弯弯》《三分钟速写——月亮女神》用线条勾勒出少女的美丽，几乎不施明暗，笔法精炼，笔触轻盈，清新亮丽，肯定，鲜明，概括性极强。有着很高的审美价值。《月儿弯弯》《月亮悄悄》《月亮女神》和贝多芬的《月光奏鸣曲》的三个乐章“慢板”“小快板”“激动的急板”异曲同工，在画面演绎了《月光》，是一首明快的钢琴奏鸣曲。代表了当代美术界极最高速写水平。

　　意象速写《法女郎》《夏娃》，速写系列的两幅佳作，“底纹”速写，用彩色铅笔像小蚯蚓一样将画面涂满不同的颜色，别致而有韵味，利用了光影和明暗，人物在刻意营造的氛围中，女性味十足的将双臂高举在脑后发髻，朦朦胧胧，妩媚动人，缥缈的，虚幻的。程亚杰的审美观融合了东西方文化，这两个女性人体体现出来，西方的坦率大胆，东方的含蓄羞涩重叠在一起。唯美主义画作。

　　尼采哲学在20世纪，激起深远的调门各异的各流派的回声，包括生命哲学，存在主义，弗洛伊德主义，后现代主义，都以各自的形式回应尼采的哲学思想。这些思潮深刻影响到艺术、绘画、生活。这幅《潮起潮落》某种意义上就是弗洛伊德主义的诠释。速写加油画再加心瓣，一步步大潮涨起，赤橙黄绿青蓝紫，一层层高潮退去，潮起潮落，生生不息。

　　动态人物速写《维尼斯阳光》《瞬间的美丽》加入彩笔技法，人物、背景生动而活泼，色彩强化速写人物的动感美感是程亚杰艺术的特点，。维尼斯阳光的人物相对静止，阳光相对流动，人物造型用线条勾勒，轻松怡然，享受着阳光的沐浴，表现出女性的静美；瞬间的美丽捕捉的是女性柔美洒脱的一瞬间，同样使用线条，同样优美的造型.

　　动态人物速写《十七岁》《出水芙蓉》《春风》加入点彩泼墨技法，虚幻朦胧的效果。

意象人体动态速写《红与黑》《我的父亲母亲》《巴黎之春》

Modeling and Aesthetic: Cheng Yajie' s Sketches in 2015

Xi Lin

　　Cheng Yajie continues to innovate and change his own artistic styles, which can be seen from the various styles of his sketch works, including "line" sketch, drawing, crayon sketch, "stippled splash-ink" sketch, "shading" sketch, "color" sketch, sketch with "symbols, numbers and butterflies", "lithograph" sketch, oil painting sketch and so on. Cheng Yajie' s pursuit for change makes his art full of variety.

　　With proficient mastery of both Chinese fine brushwork technique and Western modeling technique, Cheng Yajie manages to create various and unexpected sketch works. The technique of dynamic sketch marks the artist' s maturity. Human body dynamic sketch requires an artist to be equipped with the technique of figure sketch, strong modeling ability, integral consciousness, penetrating perception as well as the experience of proficiently applying anatomical knowledge. With preeminent ability to select, feel and remember a certain dynamic, Cheng Yajie perfectly combines the most significant instantaneous modeling and the most impressive aesthetic tableau, and displays it on paper. Additionally, he attains perfection in "dynamic line"―the line showing the feature of human movement, and perfectly portrays the dynamic and space sense of the figure. This is Cheng Yajie' s art of dynamic figure sketch.

　　Three-minute sketches: The Moon Is Slipping Away, Curvy Moon and Three-minute sketches: Cynthia draw the outline of a young girl without using the technique of light and shade. The three paintings with refined and light brushwork and succinct generality are so bright and distinctive. They are of high aesthetic value. Compared to the three movements — adagio, allegretto and agitato presto—of Moonlight Sonata by Beethoven, Curvy Moon, Silent Moon and Cynthia are different in approaches but equally satisfactory in results. Cheng Yajie interpreted Moonlight in picture and Beethoven played a lively piano sonata. The three paintings represent a sky-scraping level of sketch in contemporary circle of fine arts.

　　The two imagery sketches including French Girl and Eve are excellent works of sketch series. "Shading" sketch refers to fill the whole paper with different colors like little earthworms, which is unique and charming. With the aid of light and shade, French Girl portrays a young girl with femininity putting her arms on the hair in the back of head. The atmosphere created deliberately makes her more indistinct, charming, ethereal and illusory. Cheng Yajie' s aesthetics perfectly integrates the Oriental and Western culture. French Girl reveals straightforward and bold Western culture while Eve embodies implicit Oriental culture. The two paintings belong to aestheticism.

　　Nietzschean philosophy had left a great impact on various schools including life philosophy, existentialism, freudianism and postmodernism. These schools gave responses to Nietzschean philosophy in various ways. Nietzschean philosophy had a profound influence on art, painting and life. Tides Ebb and Flow in a sense is an interpretation for freudianism. The combination of sketch, oil painting and symbol of hearts reveal the rising tides while the layered rainbow colors embody ebbing tides. Tides ebb and flow in an endless succession.

　　The dynamic figure sketches including Venice Sunlight and Momentary Beauty, with the aid of the crayon technique, portray a lively young girl and create a vivid background. Strengthening the sense of figure' s movement and beauty with colors turns out to be a feature of Cheng Yajie' s art. In the sketch Venice Sunlight, compared to the flowing sunlight, the figure is relatively still. The figure' s shape outlined with lines displays a beautiful young girl who is leisurely and contentedly enjoying sunbath, which embodies the tranquility and beauty of female nude. Momentary Beauty seizes a certain moment which shows the femininity and spirituality of female, and also use lines and graceful modeling.

　　The dynamic sketches including Seventeen, Bathing Beauty and Spring Breeze, with the aid of stippled splash-ink technique, create an unreal and indistinct effect.

　　The dynamic sketches including The Red and the Black, My Father and Mother and Paris Spring fills the figure and background with colors so as to create the effect of shade.