Hong Kong's Hang Seng index appreciated 1.54% or 319.27 points at 21,018.46 on Wednesday as investors sentiment improved on Greek debt talks and China announced it will apply measures to support first time home purchasers. Property shares rallied on the announcement with China Resources Land Ltd. gaining 3%, China Overseas Land & Investment Ltd. surging 5% and Agile Property Holdings Ltd. adding 4%. Energy stocks climbed after Chinese government raised retail diesel and gasoline prices. PetroChina Co. advanced 2.2% China Petroleum & Chemical Corp edged up 1.8%.