Stocks surged more than five per cent yesterday amid signs that the Government was continuing to plough funds into the battered equity market, brokers said. The third straight day of official support came despite an easing of pressure on the Hong Kong dollar and lower interbank rates. 'I think [intervention] will work for a while, but not for a long time,' Bullish Securities' Edmond Choi Yee-ming said. 'What I have seen in the market is not only government money, but also investors joining in.' The Hang Seng Index jumped 411.66 to 7,622.58 points, taking its gains since Friday to almost 15 per cent.