The form of art you are referring to is likely related to the styles and techniques prevalent in ancient Chinese history. If you are thinking of traditional pottery, bronze work, or any significant developments in material culture, it is often associated with the Shang Dynasty. However, if you're referring to certain specific art forms like landscape painting or more refined artistic techniques, the Han Dynasty is also notable.
Could you specify what type of art you are referring to for a more accurate answer? Otherwise, based on common references, the Shang Dynasty is often recognized for its early bronzework.