An emotional Ji, who burst into tears after the thrilling win, said she was aware of refreshing the league's all-time scoring record.
Matthias Ginter scored the opener for Germany after a fine cross from Antonio Ruediger, while Leon Goretzka capitalized on a mistake by keeper Georgiy Bushchan to head the ball into the net.
Temwa Chawinga broke the deadlock for Wuhan in the 26th minute, taking advantage of an error from a Jiangsu defender in the penalty area and lobbing the ball into the net. Jiangsu wasted a chance to level the game in the 38th minute as Ni Mengjie missed a penalty.
"Sometimes I feel that according to my physical condition, I can still play two or three seasons, but I don't have enough energy for it since taking up the coach position," she admitted.
The American improved her 2020 record in majors to a spectacular 16-1 after the win, during which she avoided the need for a deciding set and saved 10 of 12 breakpoints to seal the victory.
Xinjiang's Han Xu finished with a team-high 19 points. Liu and Wang each had 17.
Hamilton's win also saw him take a giant step towards his seventh F1 world championship, as his teammate and closest title rival Valtteri Bottas failed to score after retiring with engine trouble.
Gracia had been close to resigning from the club he only joined in the summer due to his frustration over the club's work in this summer's transfer window, which saw key first team regulars such as Ferran Torres, Dani Parejo, Ezequiel Garay, Francis Coqueilin, Rodrigo Moreno and Cristiano Piccini all leave with nobody signed to replace them.
There was better news involving forward Richarlison, who trained freely after injuring his left ankle while playing for Everton in their 4-2 win over Brighton on Saturday. Enditem
In a race of unusual attrition by modern standards, five drivers failed to see the chequered flag. Following the early retirements of Russell and Bottas, Renault's Esteban Ocon, the Red Bull of Alex Albon and McLaren's Lando Norris all pulled off with mechanical trouble, with Norris' stricken car prompting the late deployment of the safety car.
Now the top two seeds - Djokovic and Nadal - will face each other, which would offer big stakes for both sides to seek for.