In the Warring States period a greater variety of artifact styles and patterns was produced.
Inlaid gold, silver, jade, and colored glaze became popular.
The picture below shows an inlaid geometric pattern in a bronze ware wine vessel.
镶嵌几何纹战国晚期(公元前4世纪中叶〜前221年)上海博物馆
Inlaid Geometric Pattern
Late Warring States Period (Mid 4th century — 221 BCE), Shanghai Museum