Hosts China swept the China Masters badminton Super Series after world and Olympics champion Lin Dan brushed aside Thai Boosak Ponsana 21-17,21-17.
The men's singles final was the only one that saw a non-Chinese player compete as the hosts already booked four all-Chinese final staking place earlier.
Lin, three times world champion and Beijing Olympics winner, did not give much room to the Thai player in the 40-minute final amid thunderous cheers.
"I am happy with the result, not just the victory, but also the fact that I overcame China's major opponents on the way to the championship," said Lin, 26.
Lin eliminated world number one Lee Chong Wei of Malaysia in the semifinal after beating South Korean Park Sung Hwan.
Chinese head coach Li Yongbo said the gold medal haul and young players' performance were beyond his expectation.
"I did not expect that we could take all five titles. I think the most satisfying thing is that we found great potential in some of the young players. "said Li. "They will add China's competitiveness in 2012."
Teenager Wang Shixian was one of the young stars Li was referring to as she staged the biggest upset of the tournament to win.
The 19-year-old, ranked 64th in the world, beat world number two Wang Lin 21-14, 14-21, 21-14 as she continued to play the role of seed killer. She overcame newly crowned world champion Lu Lan, seeded fifth, 16-21, 21-11, 21-14 in the semifinal after beating All England champion and fourth seed Wang Yihan 21-18, 21-18.
"I used the right strategy of going to the net and also won some lucky points," she said.
Shixian said a pressure-free state of mind helped a lot in her run for the championship.