Women's quarter-final action began on Rod Laver Arena on Tuesday with two-time Australian Open finalist beating reigning US Open semi-finalist Flavia Pennetta 6-2, 6-2.
Up next was former world No. 1 and Serena Williams' conqueror Ana Ivanovic taking on teenager Canadian Bouchard, and it was the 19-year-old who prevailed 5-7, 7-5, 6-2 to book her spot in the first Grand Slam semi-final of her career where she will face the experience of Li Na.
Li Na has reached the final of two of the last three Australian Open tournaments and she entered her quarter-final match-up on Tuesday against fellow 31-year-old Pennetta full of confidence despite Italian having won the last meeting between the pair.
The Italian 28th-seed is also enjoying a career revival despite being aged in her 30s to have now made back-to-back Grand Slam quarter finals, but she was no match for her Chinese opponent on Tuesday.
The match lasted just 67 minutes as Li conceded just the four games to Pennetta in the two sets highlighted by her hitting 23 winners and Pennetta 27 unforced errors.
Pennetta's serve was also right off with her getting just 39 per cent of her first serves in and then winning just 39 per cent of her second serve with Li Na taking advantage to earn five service breaks in the match.
Li Na is now into her fourth semi-final at the Australian Open and the sixth overall at Grand Slams with the 31-year-old world No. 4 still looking to add a second major title after winning the 2011 French Open.
Up next on Rod Laver Arena was the second quarter-final match-up of the day between a former world No. 1 and Grand Slam winner desperate to get back to that level again, and a teenager with all the tools in the world to be able to earn those sorts of accolades moving forward.
Ivanovic's confidence was deservedly sky high coming into the match after she beat Serena Williams for the first time in her career in the Round of 16.
Bouchard, though, has the fearless nature of being a 19-year-old and being in unchartered territory this far into a Grand Slam.
It was a tight first set with neither player able to serve particularly well, but in the end Ivanovic broke Bouchard's serve once more and that was enough to win the set seven games to five in 47 minutes.
It was the same scoreline in the second set although it went in Bouchard's favour as she lifted her game with 17 winners and winning 10 points at the net. She claimed the second set seven games to five in 57 minutes.
It was then all the 19-year-old in the deciding set as the 30th-seed showed a stronger temperament than her more seasoned opponent.
Bouchard hit 14 winners and Ivanovic 12 unforced errors in the third set with the Canadian taking it out six games to two to win the match and set up what should be a fascinating semi-final now with Li Na on Thursday.