It was a terrible start for Team GB as China raced into a 7-0 lead, Wang Shipeng consolidating China's early promise with three points after just a minute.
However, Britain fought back and levelled the scores within three minutes, Joel Freeland with two scores and Reinking a three-pointer.
The rest of the quarter remained close until GB went on a scoring streak, and the teams went in with the score 27-15 to the hosts.
Team GB pulled into a 35-22 lead in the second quarter before a mini fightback from the Chinese saw them pull back to 39-29, but further clinical finishing from the Brits gave them a 46-31 lead at the half.
Britain continued to dominate the remaining two quarters, with Kieron Achara particularly impressive, finishing with 16 points.
The result ensures Team GB will not finish bottom of Group B.