What is the most important thing in oil painting?

Oil painting is an important kind of painting, which is a picture drawn by artists on cloth, board, thick paper and wall with oily pigments. It originated in Europe, and in the12nd century, artists from the Nordic countries began to mix pigments and oils to paint. After the improvement and practice of the Dutch painter Van Dyke in 14 and 15 centuries, it was widely adopted and gradually formed a unique painting.

Oil painting has three characteristics: first, it is rich in color and expressive, which can fully express the complex tone levels of visual objects and characters and make them real and three-dimensional; Second, the pigment has great hiding power, free description and easy modification; Third, the oil is solid and durable after drying, and it is not easy to change color and mildew, which is convenient for long-term storage. During the Renaissance, oil painting began to prevail in Italy, the Netherlands, Spain and Germany, replacing the traditional egg white painting made of egg white mixed pigments. 18 and 19 centuries, oil painting gradually developed in Britain, France, Russia and other countries, and became the overwhelming main type of painting in Europe. Later, the British experimented and invented the method of putting oil painting pigments into tin tubes, which brought this portable oil painting pigment to artists.