A Wadang (tile-end) is a particular piece of tile placed over the last tile in every line of tiles on a traditional Chinese roof. The tile ends are therefore placed all the way along the eaves of the sloping roof. They were important components of tiles in ancient Chinese architecture with protective and decorative functions.

Wadang, adorned with molded designs, was first manufactured during the Western Zhou Dynasty (11th century-771BC). Using stylized characters as architectural ornaments, however, appears to have developed in the Yan State during the Warring States Period. The tradition flourished during the Qin (221-206BC) and Han (206BC-AD220) dynasties. Western Han tile ends are typically divided into two or four sections; the winding, ropelike characters contained within are in relief and adapted to fit within the confines of circular forms.

In the Han Dynasty the Wadang technique reached its peak. In this period, the design was elaborate and Wadang decorated with Zhuan (seal scripts) came into being. The Zhuan calligraphy on Wadang was mainly Xiaozhuan (lesser seal scripts), and the characters were arranged orderly and equably, featuring simplicity and vigor.

The Wadang design has great variety and not only combines painting, craftwork and carving, but also practicality and aesthetics. Wadang adds much beauty to ancient architecture. It not only presents artistic enjoyment to people but also provides important material references for the archeological estimation of ancient buildings. In addition, while Wadang is a valuable material regarding Chinese calligraphy, seal engraving, painting, etc., it also provides some references for the study of politics, economy and culture of different periods.