The hosts did not stop, and created another amazing run, this time 14-0, on the way to a 44-33 lead in the 17th minute and 49-41 at half-time.
Miguel Angel Russo's men are now four points clear at the top of the Group H standings, with one match remaining before the knockout rounds.
Fujian was in lead in the start of the first set. However, Tianjin retook the advantage after scoring five points in a row. Fujian's frequent errors in receiving allowed Tianjin to a win.
Several of those who tested positive for the virus have since recovered and Flamengo were able to begin Wednesday's match with seven of their usual starters.
Liverpool issued a statement saying he has "tested positive for Covid-19 and is currently self-isolating according to the necessary guidelines."
However, 10th-seeded Victoria Azarenka saw her campaign at Roland Garros end on Wednesday as the Belarusian was shocked by former world No. 26 Anna Karolina Schmiedlova of Slovakia 6-2, 6-2 in a match where she racked up 36 unforced errors. Enditem
Cedric Bakambu finished second with a stunning strike in the 27th minute after a goal was disallowed for offside in the opening time.
Zhang was 0.45 second faster than the former Asian record holder, Olympic champion Liu Zige, who has kept it for 11 years. There is only a 0.14-second difference between Zhang's new record and the world record held by Swedish Sarah Sjostrom.
"[I'm] struggling to walk so that's a tell-tale sign that I should try to recover," she added.
Luo's compatriots Zhao Xintong, Xiao Guodong and Zhou Yuelong all have progressed into the second stage earlier.
"It's important for a striker to score goals," said Icardi. "Today we lacked the efficiency to kill the match earlier, but we are happy with the result."