After the third period, which saw many lead changes and ties, Sichuan managed a one-point lead heading into the final 10 minutes.
The previous best for the No.7 seed in Paris was the semifinals in 2012 when she lost to eventual champion Maria Sharapova 6-3, 6-3.
Hao, former assistant coach and technical director of Luneng, will be the club's new head coach.
Jiangsu and Beijing are placed third and fourth in the championship group standings respectively. Enditem
In other fixtures on Sunday, Fortaleza was held to a goalless draw by Atletico Goianiense, Coritiba drew 0-0 at home to Sao Paulo and Botafogo tied 1-1 at home by Athetico Paranaense. Enditem
Saturday ended with Newcastle United winning 3-1 at home over Burnley thanks to an excellent display from winger Allan Saint-Maximin and two goals from Callum Wilson. Enditem
Cavani was left out of the Celeste squad by head coach Oscar Tabarez, paying the price for having not played since March.
In another game on Sunday, Beijing moved past Daqing 87-50. Enditem
Other leading clubs in Europe announced similar figures. Manchester United shipwrecked with an 80 million offer for Jadon Sancho as Borussia Dortmund demanded 120.
Trencin entered the new season with a triumph thanks to a strong second period, scoring four goals and breaking its opponent Detva in the process.
In other Brazilian top-flight fixtures on Saturday, Gremio drew 1-1 at home to Internacional while Corinthians drew 0-0 at Bragantino. Enditem