《苏武牧羊图》轴，清，任颐作，纸本，设色，纵149.5cm，横81cm。
在任颐众多的人物故事画中，“苏武牧羊”是他描绘较多的题材之一。《汉书·苏武传》中记载：苏武，字子卿，曾奉汉武帝命以中郎将身分出使匈奴，单于欲降苏武，苏武不屈，被留放北海(今贝尔加湖)长达19年，苏武“杖汉节牧羊，卧起操持，节旌尽落”，表现了强烈的爱国精神。作为出身于市民，又一度随太平军转战的任颐，面对加速殖民化的国土，深感“身居十里洋场，无异置身异域”，甚至寄希望于“草莽英雄”，正是这种思想驱使他在画中寄托忧患意识，歌颂高尚的爱国情操。图中苏武手持汉节，如坚石般站立于画面中心，双目望于画外，似在遥望汉国，目光坚定自信，表现了不屈的精神。
画中人物造型比例准确，除保持了陈洪绶人物奇古伟岸的特征之外，还融汇了西洋画速写、素描的技法，线条凝练概括，具有力度，与主题相统一。色墨的渲染协调统一，尤其是羊群运用写意的手法，在黑、白、灰的墨色变化中准确地描绘出羊群的造型，同时也描绘出群羊因寒冷而挤作一团的情景，以此衬托出环境的恶劣，从而突出了人物不畏艰难险阻的刚毅气节。
--------Introduction in English--------
Suwu Shepherd Picture" axis, Qing Dynasty, Ren Yizuo, paper, color, 149.5 cm vertical, 81 cm horizontal.
Among Ren Yi's numerous figure story paintings, "Suwu Shepherd" is one of the themes he describes more. The biography of Su Wu in Hanshu records that Su Wu and Zi Qing, who were appointed by Emperor Wu of Han Dynasty as Zhonglang generals, were left in Beihai (today's Lake Belga) for 19 years. Su Wu showed strong patriotism by "shepherding sheep with sticks and sticks in Han Festival, standing up and controlling them, and keeping them in good stead". As a citizen, Ren Yi, who once turned to war with the Taiping Army, felt deeply that he was "living in a foreign land of ten miles, no different place in a foreign land" and even hoped that he was "a hero of recklessness". It was this thought that drove him to place his sense of distress in his paintings and praise his noble patriotism. In the picture, Soviet Union and Wuhan hold the Han Festival in hand. They stand in the center of the picture like hard stones and look out of the picture with both eyes. They seem to be looking at the Han Kingdom from afar. Their eyes are firm and confident, showing their unyielding spirit.
In addition to preserving Chen Hongshou's peculiar and ancient features, the figures in the painting are accurately modeled. They also incorporate the techniques of sketching and sketching in Western paintings. The lines are concise, concise, powerful and unified with the theme. The rendering of color ink is coordinated and unified. Especially, the sheep use freehand brushwork to accurately depict the shape of the sheep in the black, white and grey color changes. At the same time, it also depicts the situation of the sheep crowded together because of the cold, which sets off the harsh environment, thus highlighting the character's fortitude not to fear difficulties and obstacles.
