$ 0 0 World number four Li Na swept aside Italian Flavia Pennetta in a one-sided, straight-sets demolition to move into the AustralianOpen semi-finals on Tuesday. The Chinese trailblazer was in dominant form as she crushed the 28th seed 6-2, 6-2 to set up a last-four clash with either Serbia's Ana Ivonovic or up-and-coming Canadian teen Eugenie Bouchard. Li is starting to peak at the right time, with the 67-minute mauling of Pennetta coming after she smashed Ekaterina Makarova in less than an hour on Sunday. It followed a verbal volley by coach Carlos Rodriguez after her third-round endeavour, where she was taken to three sets and saved a match point against Lucie Safarova.After I saved match point (against Safarova) I have got better, I got a lot of confidence from that and I believe in myself," said Li. "I feel good, I always play well here and I hope I can take one more step this year. The two-time Melbourne finalist and 2011 French Open winner, who came into the tournament on the back of winning the Shenzhen Open, was in a different class to the Italian, who at 31 is one day older than the Chinese player.