News At Seven-Thirty highlights: China Central Bank raised the required reserves for lenders by 50 basis points; employers from different trades spoke out against statutory minimum wage; dozens of people protest outside the Central Government’s Liaison Office; Dmitry Medvedev held talks with Donald Tsang; a key Communist Party congress begain in Cuba; alumni of Queen's College voiced their opposition against their mother school to cut Form 1 classes; CLP successfully tried and tested a solar powered sled in the South Pole; Sky 100 was opened at the International Commerce Centre today; Thai residents in Hong Kong celebrated the Songkran Festival.