A good reply in return. The forcing continuations did not promise Ni the edge.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. g1f3  4... f8e7  5. f1g2  5... e8g8  6. e1g1  6... d5c4  7. d1c2  7... a7a6  8. a2a4  8... c7c5  9. d4c5  9... e7c5  10. c2c4  10... b7b6  11. f3e5  11... a8a7  12. e5d3  12... c5e7  13. c1f4  13... c8b7  14. g2b7  14... a7b7  15. b1d2  15... b6b5  16. a4b5  16... a6b5  17. c4c2  17... f6d5  18. f1c1 A novelty. Apparently, the  Chinese squad was happy with a slight edge against the Americans, with  risk-free play. 18... b8d7  19. d2b3 Heading to a5 and ideally to c6. 19... d5f4  20. d3f4 It seems as Black should not worry too much. But this feeling is  deceptive. The pressure along the open files makes Black's task difficult  and he has to proceed with care. 20... e7d6 Very accurate.