In many of Guo's works, it's easy to feel vigor, vitality and youthful passion blended in the painting. Imprints of the times and spirit of personality are also well expressed through most of his pieces.

Instead of elaborate consideration and refinement of every detail, Guo prefers focusing on the general construction of a painting. The hefty lines endow the works with the spirit of calligraphy, vigorous and forceful.