Summary:
- The article discusses the visit of renowned Chinese artist and activist Ai Weiwei to Beijing, China's capital city, after being away for several years.
- Ai Weiwei is known for his use of technology and social media to express his political views and criticize the Chinese government's policies, particularly on human rights.
- The article highlights how Ai Weiwei's return to Beijing, a city he had been banned from visiting, is seen as a significant event in the context of China's ongoing efforts to regulate and control the use of technology and social media by its citizens.