China bounced back from their 7-0 drubbing at the hands of Australia to register an emphatic 5-0 win over South Africa.
And South Korea opened their campaign with an effortless 3-0 win over Canada.
South Africa had lost narrowly 2-3 against Malaysia but were stunned with five first half goals by the rampant Chinese who lifted their game to stun the world 12th ranked side.
China started the match in blistering pace and took three minutes to get on the scoresheet via Dong Yang.
Sun Ling made it 2-0 in the 7th minute before Wang Bowen added to their misery in the 14th minute.
South Africa were reeling and two more goals by Zhang Zhixuan ( 20th minute) and Meng Wei ( 27th minute) rubbed salt into their wounds before halftime.
In an earlier match South Korea scored three first half goals to defeat Canada 3-0.
It was obvious that Korea were playing at half pace, perhaps keeping their energy for a game against hosts Malaysia on Sunday.
Korea scored all their three goals within the opening 16 minutes as they were clinical in their penalty corners, scoring off their first two penalty corners.
Jang Jong Hyun put Korea in the lead in the 7th minute via a penalty corner before Kang Moon Kweon scored the next two in the 11th and 16th minutes.
Though Canada tried, they lacked finishing and it was merely a stroll in the park for the Koreans in the second half.