Similar considerations apply to paintings. Seals should never be placed above a mountain peak or amid the waters of a stream, "because mountain-tops must rise unimpeded into the sky and clouds and water must flow without obstruction," Li Yu explains.
蓋在繪畫作品上的位置也有講究，如山峰頂及水流中不宜有印。「山頂應是高空行雲，寬廣的境界，有印就破壞了無限空間的想像及美感；水流應暢行、動線綿延，水中下印，如生滯礙，皆不相宜」，李猷說。