Diu Lei, the greatest painter in German Renaissance, is not only a pioneer of German art, but also one of the most important painters in the world.

Diu Lei's art is rigorous and profound. In Germany, he first separated painting from handicraft labor, making painting a stage for human beings to show their wisdom.

Diu Lei's sketch pursues clear structural relations, so every detail is described by him in an orderly way. He is very attached to the accuracy of anatomy and the internal logic of structural relationship, and treats the sketch process with a scientific attitude. Like Italian Raphael, Diu Lei gradually gave up the simple imitation of natural truth, and instead sought to express the characters with the ideal beauty that classical art once gave to the human body. He tried to find some rules that embody the idea of beauty and harmony through experiments on various proportions of human bodies. He attaches great importance to the study of anatomy, and his network lines develop along the ups and downs of the structure. This technique is based on a wealth of anatomical knowledge.

Portrait of a 93-year-old man (chalk, pen, ink) is a masterpiece of Diu Lei's sketch, which he painted with a 93-year-old man as a model when he was in Antwerp in 152 1. This sketch is very detailed and the characters are profound. This image was later used by Diu Lei in Hieronymus's creation and became the image of a German humanist scholar.

Diu Lei's works represent the basic characteristics of German art, which are not only meticulous, accurate and patient, but also poetic, frank and full of spiritual strength. Diu Lei's sketch embodies meticulous artistic attitude, keen analytical ability and scientific exploration spirit.

The portrait of mother (charcoal pen) is a charcoal sketch. In a mother's application, Diu Lei outlined the image of an elderly mother with rough and concise lines. Although the old man's face doesn't have much light and shade, it is mainly depicted by lines, but his eyes are bright, his forehead is wrinkled, his nose is pointed and his lips are closed ... Every detail is expressed passionately by Diu Lei, and the silk thread of the scarf and clothing lines is also staggered and dealt with flexibly. This is a classic sketch, which embodies the artist's outstanding artistic talent.