Sa Suk Won freely used brush stroke of the oriental paintings, but gradually expanded the category of the medium from the ink to the oil paintings. He found out oil paint as a medium of untamed power from intense primary colours and matière. The artist draws dozens of colours directly on the canvas without using a palette. In the meantime, He adheres to the use of brushes of oriental painting to maintain his origin of oriental painting. He believes that 'embodying a magnanimous spirit' he is seeking could be accomplished through this method. In this way, the work of Sa is a hybrid of East and Western arts, which is in harmony with oriental brush stroke and of the colour of western expressionism.