Bamboo are sketched with calligraphy techniques. Red ink has been used on bamboo painting since the Northern Song period, as scholars have commonly used the symbol with an association to their noble character. Su Dong-po of the Northern Song was the first to draw bamboo in red ink, when his black ink accidentally ran out at work. This practice continued among scholars since then.

Pu Hsin-yu received education from the Imperial college. Due to his constant practice, he is highly skilled in using wrist in brushwork. Lines of his works are lyrical with high fluidity and precision. This work has an extended structure showing two bamboo shoots rising upwards beyond the frames. The force of brushwork applied on the bamboo leaves fully demonstrates the artist's technique in calligraphy and brushwork. Ke Jiu-si of the Yuan dynasty once mentioned sketching bamboo requires a melange of skills, including seal script for the stem, cursive strokes for the branches, Lugong strokes for the leaves and twists and turns for the rocks. Pu Hsin-yu applied similar traditional methods of the Four Wangs in his works in addition to life observation and his own creativity. This work was a painting made at leisure with light ink. Yet its skilful brushwork demonstrates the emotions and the nobility of the artist, as it carries both the majestic glamour of imperial art and the humility of a hermit scholar. The poetic element of bamboo clamouring with the breeze under the moonlight further elevates this painting to another level.