Making the territory green would require help from all members of the public, the Secretary for Planning, Environment and Lands said yesterday. Gordon Siu Kwing-chue, outlining the Government's commitment, said he believed the proposed cross-border battle against pollution would yield results given the same determination on both sides. 'To start with, we need everyone to genuinely understand what environmental protection is all about,' he said. 'This alone is one of the toughest tasks. We want people to know that environment is part of their lives, not just today, but in many decades to come,' Mr Siu said. Man Chi-sum, Green Power chief executive officer, said education was the long-term basis, but questioned whether the mainland could live up to its promises. 'At the level of central and provincial governments, the determination may be there. 'But what about counties and towns? Will they be as concerned?' he asked. Dr Man cited standardisation of the sulphur content of fuel as one example where the mainland's commitment may fail. 'People have lower standards of living there and may not be able to afford the more expensive fuel with lower sulphur content,' he said.