Olympic champion He Zi and her partner Zhong Jiawei only managed a seventh finish in the women's three-meter springboard final at China's National Games here on Tuesday.
He, winner of the event at the London Olympic Games with veteran Wu Minxia, collected 302.10 points with Zhong in the final to place seventh.
He, 1m and 3m springboard individual champion at Barcelona World Championships in July, performed well but Zhong made several mistakes in synchronization.
Wang Han, runner-up in the 3m springboard individual at the Barcelona Worlds, led all the way to win the gold with Zhang Jun for Hebei in 344.10.
Qu Lin/Chen Ye took the silver for Jiangsu in 312.90, while Wu Chunting/Xu Zhihuan claimed third for host Liaoning with 310.77.
"We are perfect today," said the 22-year-old Wang. "We are good friends and we trained a lot before the Games."