I have to say that Christie's is a first-class marketing expert. The twelve zodiac animal heads were originally only considered as faucets in the royal garden, among the most ordinary treasures looted by the Anglo-French Allied Forces. More than 20 years ago in the United States, each was worth only $1500. But when the animal heads were firmly tied to the image of the Old Summer Palace, which is filled with historical pain, the relics quickly became upgraded as historical symbols. Frequent negotiations between various parties, including the National Cultural Heritage Administration of China and Christie's, and extensive media coverage, allowed the animal heads to gain the widest audience for a free auction advertisement worldwide, with their estimated prices continuously climbing higher.