The most outstanding works of art often contain extremely rich artistic beauty in a very small space. "Orchid Pavilion Preface" is a pocket-style magnificent palace of calligraphy and art standing in the scale. Emperor Taizong of the Tang Dynasty praised it for "the work of pointing and dragging, and the beauty of cutting". Huang Ting insisted that Yang said: "The "Lanting Preface" is a rough, Wang Youjun's favorite book in his life. After reading it repeatedly, there is not a single word, which is unsatisfactory." detail. Slightly dissecting its horizontal strokes, there are exposed frontal horizontals, belted frontal horizontals, lowered horizontals, lowered horizontals, upwards horizontals, juxtaposed horizontals, etc., which can be adapted at will. The vertical paintings are either hanging needles, or making jade tendons, or falling exposed, or obliquely vertical, or arc vertical, or with hooks, or curved heads, or double-branched fronts, or juxtaposed, each is perfect.