China breezed past South Korea in Nagoya ©FIVB

Olympic champions China preserved their 100 per cent record at the International Volleyball Federation (FIVB) Women's World Grand Champions Cup as they cruised past South Korea in straight sets.

After each country played two matches of the round-robin phase in Tokyo, action at the six-team tournament has now moved to another Japanese venue in Nagoya's Nippon Gaishi Hall.

Rio 2016 winners China remain on course to seal the title as they breezed past the Koreans, the FIVB wildcard side at the tournament, 25-15, 25-4, 25-12.

Zhang Changning made nine attacks, four blocks and an ace as she led her country to success.

South Korea have now lost all three of their matches without winning a set.

The side who finishes top of the round robin will be declared as the victors of the tournament.

It features the four continental champions, the host nation and the wildcard entry.

Japan won a five-set classic against Brazil ©FIVB
Japan won a five-set classic against Brazil ©FIVB

Japan and the United States remain as the closest challengers to the Chinese after both moving on to records of won two, lost one.

The hosts defeated defending champions and FIVB Grand Prix winners Brazil in five, coming through 25-18, 25-27, 25-15, 16-25, 15-6.

The Americans twice came from behind before beating Russia 23-25, 25-21,19-25, 25-21,15-9.

Both Brazil and Russia now sit on one victory and two defeats.

Tomorrow's games see China meet Russia, Brazil play South Korea and Japan lock horns with the US.

China and Japan are due to meet in the last round of fixtures on September 10, in a potentially key game.