Pine is an important symbol in traditional Chinese culture and is the favourite scholarly object of all times. Pu Hsin-Yu was no exception. He had a seal inscribed with Songchaoke (Residing by the Pine), and established Songfeng Art Group in 1925 with a group of Manchu artists.

This work Old Pine was painted in 1995 by Pu Hsin-Yu to commemorate the 70th birthday of Deng Zhiyuan. Use of ink and strokes hinted at the style of the Four Wangs and his unique style from self-learning of ancient scrolls. Movement of wrists and arms were used in sync with that of the brush. The structure of the painting resembles that of the Southern School. Pu once said, "Trunks should be depicted with heavy and twisted strokes." Pine trunk was depicted with rough and vigorous strokes which were adopted from Licheng of Northern Song and Two Wangs. Branches intertwined in curvaceous shape to form a shape of deer horn. Pu painted trees with light and shades in balanced composition to depict its vividness. Swift strokes were used to depict its leaves. In groups and overlapping layers, the lusciousness of the tree was depicted. Inscription was written in Running Script. "Qing (celebrate)" and "Shou (birthday)" were written elaborately with a balanced structure. Throughout his life, Pu composed poems to praise pine trees. They are evergreen and echo strongly with the artist's background. On top of the blessing, the artist hinted his hermit character, making this painting a unique masterpiece.