President Xi Jinping (first left) views a model at the HKIA Tower and is briefed on how the Hong Kong Special Administrative Region promotes social and economic developments of the Pearl River Delta area through investments in infrastructure. Accompanying President Xi are the Chief Executive, Mrs Carrie Lam (second left); the Chairman of the Airport Authority Hong Kong (AA), Mr Jack So (second right); and the Chief Executive Officer of the AA, Mr Fred Lam (first right).