Wang Shi, former chairman of Shenzhen-based property developer China Vanke Co., speaks to reporters in Shenzhen in this file photo. Wang, one of China’s best known real estate tycoons, has become co-chairman of genome sequencing company BGI Group, parent of Shenzhen-listed BGI Genomics Co. Wang will assist BGI chairman Wang Jian and contribute his expertise in management, corporate governance and business operations, BGI said in a statement Sunday. Xinhua