South China's Brazilian coach, Casemiro Mior, described tonight's vital Ericsson First Division top-of-the-table clash with league leaders Happy Valley as a do-or-die encounter for the Caroliners. 'We must at least draw. If we lose, it will be extremely difficult for us to catch Happy Valley,' said Mior. Mior knows his side will be facing the team with the best defensive record in the league, having conceded just 11 goals in 12 matches. Happy Valley have also scored the most goals in the league - 28. The leaders had conceded just five goals before losing 6-2 to Instant-Dict earlier this month in a stormy match that saw five red cards. 'Happy Valley will be a very difficult side to beat. They have an excellent record with the best attack and best defence in the league. We'll be looking for a point, although winning would be a plus,' he said. 'If we beat Happy Valley, it will put us in a favourable position in the championship phase.' Brazilian midfielder Jose Ricardo Rambo will sit on the substitute's bench tonight nursing a slight leg injury, although South China will virtually be at full strength. Happy Valley's title hopes took a knock when they lost their previous two games, but the club, who are looking for their first league title in 10 years, are confident of returning to winning ways. Happy Valley beat the Caroliners 3-1 in their last encounter on October 28. Their other encounter ended in a 3-1 victory for South China - in the Senior Challenge Shield final on October 11. 'We are hopeful of at least a draw but South China will severely test us,' said Happy Valley coach Chan Hung-ping.