The Secretary for Development, Mr Michael Wong, toured the Green Hub during his visit to Tai Po District today (June 24). Photo shows Mr Wong (right) and the Under Secretary for Development, Mr Liu Chun-san (centre), being briefed by the Head of the Sustainable Living and Agriculture Department of the Kadoorie Farm and Botanic Garden Corporation, Ms Idy Wong (left), on details of the conservation and revitalisation of the Green Hub.