The extra material wins  easily. The only task is to reach the time-control.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. g1f3  4... d7d5  5. d1a4  5... b8c6  6. e2e3  6... e8g8  7. a4c2  7... b7b6  8. c1d2  8... c8b7 This leads to an already fresh position. According to my  Megabase only two games have been played in the line. 9. a2a3  9... b4d6  10. c4d5 The first lenghthy thought by the Chinese player. 10... e6d5  11. f1d3  11... a7a6  12. c3e2 This novelty has been played after  almost half an hour of thought. 12... c6e7  13. d2c3 Xu stops the c7-c5 advance... 13... f6e4 ...but allows another unpleasant move. If the knight is  left where it is the kingside attack will run smoothly. 14. d3e4  Therefore White ventures into a risky line. 14... d5e4  15. f3g5 Black loses a pawn, but in the process all his  long-ranged pieces are freed. 15... e7d5 A cautious move. Grischuk  makes sure there will be no long-ranged pieces eyeing his king. 16. g5e4  16... d8h4  17. e4g3  17... d5c3  18. e2c3  18... b7g2 Black regains the pawn, however now some files are opened against his king. It all gets very, very sharp. 19. h1g1  19... g2f3  20. g3f5  20... h4h2  21. g1g7  21... g8h8 All of this was forced and Xu hurries to bring on the reserves with 22. c3e4  22... f3h5 Black on his turn hurries to bring on the reserves and hopes  to trap the rook. 23. e4f6  23... h5g6 The point. It should be said that the previous play exhausted both players' clocks. Especially White's. 24. e1c1 According to the  computer, this most natural move is a mistake. There is a huge difference  if the white king is on d2 or c1! 24... d6e7 A blunder says the computer, but apparently both players  believed it was already over for White. 25. c2c6 With seconds on the clock Xu misses a win! 25... g6f5  26. d1g1 The last attempt. It could easily have worked in  time trouble. 26... f5g6  27. g1g6  27... h7g6  28. g7h7  28... h2h7  29. f6h7 