But first, the business side of things - having won all three of their previous rounds in straight sets, the No.2-seeded Hsieh and Peng reeled off seven games in a row from 5-4 in the first set to completely shut the door on No.3 seeds Kveta Peschke and Katarina Srebotnik in Sunday's final, 64 60.
Hsieh and Peng now have 10 WTA doubles titles together and are a perfect 10-0 in finals, as well.
"Hopefully we'll have more finals!" Peng said. "But it was a great week for us. We played some very good teams this week, especially today in the final, and we're really happy to win this title."
Their 10 WTA doubles titles include one in 2008 (Bali), three in 2009 (Sydney, Rome and Beijing), five in 2013 (Rome, Wimbledon, Cincinnati, Guangzhou and the WTA Championships) and now Doha.
But there was even bigger news for Hsieh and Peng this week - by virtue of the week's results, they will replace Sara Errani and Roberta Vinci as the Top 2 doubles players in the world, Hsieh rising to No.2 (the highest ranking ever for a player from Chinese Taipei, male or female, singles or doubles) and Peng rising to No.1 (China's first World No.1, male or female, and in singles or doubles too).
Peng is going to go back home for a bit now, to the northern Chinese metropolis of Tianjin.
"I really want to thank all my team, my parents, my friends and everyone who helped me and supported me all these years," Peng said. "Getting to No.1 is a great and amazing moment for me and I hope to share it with them now. I'm going to go home tomorrow and will celebrate with everyone there.
"But this gives us more motivation to work hard. Now people will be watching us more so it puts more pressure on us - but Su-Wei and I are going to help each other and try our best to keep going.
"We are looking forward to the rest of the year and hopefully the WTA Championships in Singapore."
For Hsieh, the tennis doesn't stop - she is heading down to Rio de Janeiro, Brazil, for the inaugural Rio Open. She'll be playing with another familiar face there - her younger sister, Hsieh Shu-Ying.