Paris 2024 sold a record 12 million tickets for the Olympics and Paralympics, beating the Games record previously set by London 2012, organisers said on Sunday.
Palfrey's comments triggered a fierce reaction from team officials and the Australian Olympic Committee.
Lin clinched gold in the women's boxing final match on Sunday, an emotional win that came as she and Algerian boxer Imane Khelif have been embroiled in a major row over their gender eligibility.
Tennis was introduced to China in the 1860s, but it failed to gain mass appeal and was largely an elite sport reserved for the wealthiest families.
The Australian Olympic Committee has decried a "misleading and bullying" online petition that described Gunn's performance as "unethical" and questioned how she was chosen for Paris.
Indian wrestler Vinesh Phogat on Thursday lost her appeal to the Court of Arbitration for Sport (CAS) after her disqualification from the women's 50kg final at the Paris Olympics for being overweight.
The athletes, fresh from a national record 53 Olympic medal trawl, were asked about absent colleague b-girl Rachael "Raygun" Gunn.
Australia's Olympic team, including gold medallists Jessica Fox, Kaylee McKeown and Ariarne Titmus, arrived back in Sydney on Wednesday to a rapturous welcome from friends, family and Prime Minister Anthony Albanese.
There will be 21 medals up for grabs with the bulk of them being given out in athletics.
"The last hurrah, I'm done. I've always said I want to retire a champion, that's it," Harrington told Irish national broadcaster RTE.
The USA, record four-time women's football gold medallists, are still on course to win the title for the first time since 2012 after beating Germany 1-0 in extra time in Lyon, with Sophia Smith scoring the only goal.
Powerhouse Dutchman Harrie Lavreysen led the Netherlands to the men's team sprint cycling gold medal on Tuesday in new world record time to successfully defend their title.
Australian teenage skateboarding sensation Arisa Trew won Olympic gold in the women's park event on Tuesday, edging out Japan's Cocona Hiraki in silver and Britain's injured Sky Brown in bronze.
"I am going to be honest, I am mainly happy for Team France because when you see everyone picking up medals all over the place, you say to yourself that you can't let them down," Henry said.
"It wasn't the result I was hoping for, but we're very satisfied with what we achieved," said 29-year-old Alexandre after Brazil lost 3-1.
A Greek athlete has tested positive for banned substances at the Paris Games and has been expelled from the athletes' village, the Greek Olympic Committee said on Tuesday.
Saint Lucia's Julien Alfred targets an Olympic sprint double on Tuesday as Jakob Ingebrigtsen and Josh Kerr go head to head in a 1500m grudge match that promises fireworks.
Alfred is seeking to emulate Jamaica's Elaine Thompson-Herah, who did the 100m-200m double at the Rio 2016 Games and at the Covid-delayed Tokyo Olympics.