Li Na: 'Agnieszka Radwanska is like a wall'

Li Na has described Agnieszka Radwanska as "a wall" following her victory over the Pole in the quarter-final of the Australian Open.

The Chinese reached her third Melbourne semi after winning 7-5 6-3 in one hour and 42 minutes on Rod Laver, but gave praise to her opponent following the match.

"She's a tough player," Li said.

"I was feeling today against a wall. She can hit everywhere, but without a mistake.

"You have to focus on every shot. Not every point, every shot."

The sixth seed will play the either Ekaterina Makarova or Maria Sharapova in the last four.