What controversial installation by Ai Weiwei, consisting of 100 million porcelain sunflower seeds, was displayed at the Tate Modern in London in 2010?

Sunflower Seeds

"Sunflower Seeds" by Ai Weiwei, a massive and immersive installation at the Tate Modern, captured the attention of audiences and critics worldwide. Each of the 100 million sunflower seeds was hand-painted by artisans in Jingdezhen, the historical capital of porcelain in China, raising questions about mass versus the individual, traditional craftsmanship versus mass production, and the political and social implications in China. Initially, visitors were invited to walk on the artwork, but concerns related to porcelain dust quickly restricted physical access. This restriction added an additional layer to the experience of the artwork, emphasizing the limitations on freedom of expression and control, recurring themes in Ai Weiwei's art.