New Delhi:After two clean sweeps, India faces its toughest challenge of the Fed Cup when they take on China on Friday afternoon. Both teams have a clean slate in the tournament so far. The Chinese team, seen here racing to a comfortable victory against Singapore on Thursday, start as favourites against the hosts. The team boasts of having as many as three players in the top 100 with 23-year-old Na Li the highest ranked member at 41 in the WTA rankings. India's non-playing captain Enrico Piperno meanwhile hoped that his team will raise their game and give a tough fight to their rivals.