In Group G, hosts Thailand came unstuck as Zhang Yu's 19 points sent the Chinese to a narrow 69-61 win.
However, the game was won in the opening two quarters when the visitors raced to a 44-27 lead, before the Thai's tried to claw their way back.
After two games, Kim Jae Woong's team stay bottom of the group, behind Latvia, who lost 68-47 to Serbia.
The top of Group H produced a much tighter affair as Alexandre Mata's girls edged Japan 79-76.
Aleia Rachide led the Africans with her 23 points as Mozambique stayed top of the group.
Finally, Brazil stayed third despite a massive 80-50 win over Korea.
Renata Oliveira led the charge for the Brazilians with a whopping 31 points.
Penthathlon Tokyo 2020 Line-up
Aberdeen Standard Investments Ladies Scottish Open