An example is the famous inscribed bronze vessel from the Zhou dynasty (11th to 3rd century BC) known as the Maogong Tripod, on which the text slopes out towards the bottom (as a rubbing of the text shows), though it appears to be laid out in straight lines.
例如毛公鼎腹中的銘文，看起來是平直排正的，然而拓印下來卻會發現是成八字形的向兩邊撇開。