Why did the Chinese government demand Zhang Hongtu's painting Bird's Nest in the Style of Cubism be removed from China?

The Chinese government demanded the removal of Zhang Hongtu's painting "Bird's Nest in the Style of Cubism" due to its perceived political implications and the artist's critical stance towards the Chinese government's policies. The artwork, which reinterprets the iconic Bird's Nest stadium in a cubist style, was seen as a challenge to the official narratives and state-sanctioned representations of Chinese culture and identity. Authorities often restrict artistic expressions that they believe could incite dissent or provoke controversy.