Song clinched the title in an personal best of 5.30 meters, while Yao, winner of the 2020 Chinese National Athletics Championships, finished second with 5.15m. Han Guangyan of An'hui won the third place with 5.00m.
"Our young players have got increasingly more opportunities which is reflected by an increase of playing time and goals," said Dong Zheng, general manager of CSL.
Gould scored 107 to tie the game up at 7-7 and was calm enough to win the 18th frame, forcing Selby to seal the win in the deciding frame.
The 16 teams were divided into two groups this season, with the top four teams in each group moving into Final A for the championship race while the bottom four falling into Final B for the 9th to the 16th places.
Russia's Daniil Medvedev, seeded fourth, was unable to clinch his first win at Roland Garros after being shocked by Hungarian Marton Fucsovics 6-4, 7-6(3), 2-6, 6-1. It was the fourth successive first-round-exit for the 2019 US Open finalist at the French Open.
Dubbed #RESTART, the series will witness a return of international table tennis events after several months of suspended activity due to the COVID-19 pandemic.
"In fact, we're still waiting for legal guidelines to run the games," Dortmund's sports director Michael Zorc complained.
"Never give up. It's a good day. It's nice to get another win as it's been a while and I now need to keep the momentum going," added the Finn, who has generally struggled to match Hamilton's pace this year.
"We are a team under construction and we didn't have time to try more solutions in the pre-season, so let's try to find them in these first few games," he added.
The Barca boss is unlikely to make many changes to the team that defeated Villarreal, partly because he has no alternatives at right back or central defense, where Sergi Roberto, Clement Lenglet and Gerard Pique currently have few options other than to continue.
Meanwhile left back Marcelo is also struggling with a back injury and Ferland Mendy will continue in defense.