Cai and Fu went on to win the Li-Ning China Masters Super Series. Being the fifth-seed, they first defeated their second-seed compatriots Xu Chen and Guo Zhendong 21–11, 21–16 in the quarterfinals. In the semifinals, they made a great comeback against the third-seed South Korean rival Lee Yong-dae and Jung Jae-sung 20–22, 21–13, 21–17. Cai and Fu then clinched their second China Masters title by defeating the fourth-seed South Korean pair Yoo Yeon-seong and Ko Sung-hyun in 2 sets 21–14, 21–19. Cai and Fu won their third title in a row by winning the Yonex Japan Open Super Series. They, being the fifth-seed, beat the young Korean Pair Cho Gun-woo and Kwon Yi-goo 21–14, 16–21, 21–12 in the quarterfinals. In the semifinals, they defeated their promising compatriots Zhang Nan and Chai Biao 21–17, 21–16. In the finals, they made a great comeback again against the first-seed and Malaysian world no. 1 Koo Kien Keat and Tan Boon Heong 18–21, 21–14, 21–12 to win their first Japan Open title.
At the 2012 Summer Olympics, they defeated Denmark's Mathias Boe and Carsten Mogensen in the final to win the gold medal.
Having had 1 Olympic gold medal and 4 World Championship titles, as well as many other titles, Cai and Fu is the most successful men's doubles pair in badminton history without doubt. They have expressed the will to continue their career together as long as they can after the London Olympics.
An ancillary badminton achievement of Fu is that while competing in the 2005 Sudirman Cup, one of his smashes was clocked at 332 km/h (206 mph), the fastest propulsion of a shuttle on record. Fu also fired a 303 km/h smash during game 3 of the 2010 BWF World Championships men's doubles final, which was confirmed by the commentator Gillian Clark as the fastest of the tournament. The fastest smash by Fu during the 2011 Sudirman Cup final was clocked at 291 km/h.