Visitors encouraged to walk on crunchy carpet of seeds . Eleventh installment in acclaimed Unilever series . Most famous for co - designing Beijing 's ` ` Bird 's World '' park . Shortly after , Ai -- who is one of China 's leading social activists and bloggers -- distanced himself from the Olympics calling for a boycott and saying the Chinese government was using them as propaganda . Also well - known blogger and outspoken critic of Chinese government .
Visitors encouraged to walk on crunchy carpet of seeds . Eleventh installment in acclaimed Unilever series . Most famous for co - designing Beijing 's ` ` Bird 's World '' park . Also well - known blogger and outspoken critic of Chinese government .