The Black Ferns were comprehensive 121-0 winners over Hong Kong in the first game of matchday two at the Women's World Cup in Dublin.
Portia Woodman was the star of the rout with eight tries to her name while there were 11 other tries carded as New Zealand were too good.
Leading 57-0 at the interval with nine tries already on the board, they added a further 10 in the second stanza to make it two wins from two.
The second game of the day saw England also make it two victories out of two as they ran out comfortable 56-13 winners over Italy.
Danielle Waterman, Lydia Thompson and Emily Scarratt each scored a brace apiece while Tamara Taylor, Amy Wilson-Hardy, Amy Cokayne and Alex Matthews grabbed the other tries in the victory.
England's Pool B rivals USA also picked up a bonus-point win to join them at the summit as they beat Spain 43-0.
Canada were next on the schedule and claimed a hard-fought 15-0 win over Wales, with Lori Josephson and Magali Harvey crossing the whitewash. They are now one point behind New Zealand at the summit of Pool A.
Hosts Ireland meanwhile recovered from a 0-14 half-time deficit to beat Japan 24-14 in a result that puts them on eight points in Pool C, two behind rivals France who thumped Australia 48-0 in the final game of the day.
Day Two results
New Zealand 121-0 Hong Kong
England 56-13 Italy
USA 43-0 Spain
Canada 15-0 Wales
Ireland 24-14 Japan
France 48-0 Australia