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Video - China win synchro diving gold
Defending world and Olympic champions Guo Jingjing and Wu Minxia won the synchronised three metre springboard diving to earn another gold for China.
In front of 17,000 fans in Beijing's Water Cube the pair led all five rounds of the final giving the hosts their fourth gold overall.
The pick of the dives for the duo was a back leap in the second round which scored three perfect tens.
Russia pipped Germany for silver, while USA narrowly missed out on bronze.
British twosome Tandy Gerrard and Hayley Sage struggled with some of the more technical dives in their first outing at the Olympics.
They finished eighth from eight with a final score of 278.25 points.
Chinese superstar Guo, 27, collected the first of the two medals she is aiming for at the Games, as the partnership retained the title they won in Athens with a score of 343.50 points.
Having also won the solo three metres springboard title four years ago, the so-called 'diving diva' is the hot favourite in the individual event of her third and final Olympics, having said she will retire after Beijing.
Bryant and Rittenhouse of USA narrowly missed a medal
Continuing the form that saw the two triumph in the 2008 World Series, they opened up a 17-point lead before the final dive where a back two-and-a-half somersault made sure of the gold.
The battle for second and third place was hotly contested between three countries.
Russia's Julia Pakhalina and Anastasia Pozdnyakova eventually came through to take the silver to ensure Pakhalina's third visit to an Olympics podium.
With a different partner, the Russian won gold in the event at Sydney and silver in Athens with Vera Ilyna.
Meanwhile, Germany's Ditte Kotzian and Heike Fischer's reverse two-and-a half somersault in the final round narrowly beat the USA team to bronze.
Americans Kelci Bryant and Ariel Rittenhouse missed a medal by 4.5 points with their total of 314.40.