Having a full contingent back on the field helped China back into the match but the Black Sticks defence was secure and the hosts were able to close out the game and remain unbeaten at the tournament.
The Black Sticks have now beaten India and China to top Pool B and meet Ireland on Tuesday (NZ time) in their final pool match. China is on 3 points from yesterday's win over Ireland and play India in their final pool match.
With one round two match to be played today, Gemma Flynn from the Black Sticks and Georgie Parker from Australia top the goal scoring table with 2 a piece.
Half time score
New Zealand 1
China 1
Final score
Black Sticks 3: Gemma Flynn (2) Sophie Cocks (1)
China 1: Xiaoxue Zhang
One round two match remains this afternoon when India and Ireland clash.