Workers are seen at the Seed Cathedral, the centerpiece of the UK Pavilion at the Shanghai World Expo site in Shanghai February 21, 2010. The 20-meter-high cube-like Seed Cathedral will be covered by 60,000 slim, transparent acrylic rods, which will quiver in the breeze, according to the official website of Shanghai Expo. REUTERS/China Daily (CHINA – Tags: BUSINESS TRAVEL) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA