In Yang Sanlang's career path of art, his most laudable theme is landscape. Yang is deeply-moved by the calm landscape paintings created by the mid-19th century naturalistic landscape painter Jean- Baptiste-Camille Corot. His passion for painting outdoors is influenced by impressionists' practices and their endeavour to capture natural lights in paintings. With the experience of paintings outdoors, he created his own style which is tinged with the characteristics of Taiwanese countryside. As his horizon is broadened from time to time, Yang has developed his unique method to depict cultural landscapes. Throughout his entire life, Yang has been pursuing perfection in art. From the choosing of canvas, paint, and frame, to his determined efforts to perfect every brush stroke, Yang keeps modifying and refining every detail to make himself satisfied.

The work Harbour (Lot 1196) depicts the tranquil cultural scene of a port. The front view contains a series of boats extending and leaning towards the bottom right side. The back view is a group of architectures which glows with golden aura and warmth, bringing the painting a sense of calm and stable. The warm yellow and orange colours dominate the tone of the painting and create a rhyme of yellowish golden light; however, the blue boats and a few brush strokes of blue sea waves have a major effect on balancing the painting. Yang's abundant colour layers are composed of the background colour and the gradation of tone. He said, "the more the brush strokes, the more serene and more harmonious the atmosphere ". With the brown tone as the base in Street View (Lot 1197), this painting brings viewers' vision into the quiet street. On the left, the eaves extended from the row of houses seem to be bringing viewers into the painting. It is as if an invitation to the viewers to investigate the ancient street. The dark brownish tone is the trace of Yang's studies in Kyoto, portraying the deep culture and feelings in the street.