News At Seven-Thirty highlights: G-20 Summit begins; Hu Jintao held key talks with other world leaders; G-20 leaders attended a banguet before summit; protesters in London played a giant Monopoly game; global stocks soared; Donald Tsang says full impact of economic crisis is yet to be felt; HKU found local economy shranks by 4 percent; February total retail sales dropped by 12.6 percent; PCCW’s trading maybe suspended from tomorrow; North Korea started fuelling a long-range rocket; Kelvin Kwan made an apology for possession marijuana; citizens queued for the opening of computer fair in Megabox; group tickets for 2010 World Expo are available from today;National Cherry Blossom Festival began in U.S. capital yesterday; panda suffers from psychological traums caused by Sichuan earthquake