PERTH, Australia - Chinese star Li Na showed she had put her post-French Open slump firmly behind her with a commanding win over Spain's Annabel Medina Garrigues at the mixed teams Hopman Cup on Tuesday.

Having come from a set down to dispose of world No 9 Marion Bartoli on the opening day of the tournament, the world No 5 lived up to her claim after that win that she was "back" by thrashing the 27th-ranked Medina Garrigues, 6-3, 6-1, despite China losing the tie to the Spanish 2-1.

Li, 29, said an intensive offseason training regime in Munich had helped her rebound from a disappointing finish to 2011.

"After winter training I was feeling better for the season," she said.

"After the French Open I didn't do well.

"I had four weeks (in Munich), no photo shoots, no interviews, just very tough training.

"Mostly for fitness, I want to keep healthy for the whole season, I am not young any more and do not have time to waste," she said.

"I have to focus on every tournament and every second and that is why I stayed in Munich for such a long time."

Li had not beaten Medina Garrigues in four previous meetings, although the last of those encounters was back in 2008, but she completely dismantled the Spaniard in an impressive performance ahead of this month's Australian Open.

Medina Garrigues grew visibly frustrated as she struggled to counter the consistently brilliant groundstrokes of Li, who hit 18 forehand winners.

After the win over Bartoli on Saturday, Li admitted she had struggled to cope with her status as China's first Grand Slam champion in the latter stages of 2011, winning seven of the 16 matches she played after her breakthrough French Open triumph.

Li bowed out in the second round at Wimbledon and in the first round at the US Open, but her rejuvenated early season form bodes well as she attempts to replicate her appearance in the final at last year's Australian Open.

She is now again being coached by her husband, Jiang Shan, who was in charge during her run at Melbourne but was relegated to the role of hitting partner during her French Open success, when Michael Mortensen took over as coach.

Mortensen had replaced Jiang after Li failed to win a match in her next four tournaments following last year's Australian Open.

Agence France-Presse