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.
Nuclear-armed North Korea declared the South its principal enemy earlier this year and tensions between the two countries are at one of their highest points in years.
Five medals will be on offer in the swimming at La Defense Arena, including the men's 100 metres freestyle, 200 butterfly, 200 breaststroke and the women's 100 freestyle.
Adding to the early criticism about the quality and quantity of the food at the Olympic Village, the queen of gymnastics gave the French offerings there a thumbs-down, opining that athletes would need to get out to enjoy the "real" local cuisine.
The men's and women's triathlons were given the green light a day after the men's event had been postponed because of pollution levels in the Paris waterway.
On Tuesday, McKeown retained her 100m backstroke crown from Tokyo, crushing American rival Regan Smith to earn her fourth Olympic gold medal and join a select group of swimmers with three individual titles.
France set up a potentially explosive quarter-final showdown with Argentina in the men's Olympic football tournament after beating New Zealand 3-0 in their final group game on Tuesday.
Simone Biles led the United States to a dominant victory in the women's gymnastics team final on Tuesday, laying the ghost of Tokyo to rest as she claimed a fifth career Olympic gold medal.
With the Olympics underway in Paris, hotel operators made a final push to lure last-minute travelers, lowering prices and dropping minimum stay requirements after some people balked at what they saw as price-gouging prior to the games.
Some Christian groups and conservative politicians have said they were angered by a segment of the opening ceremony showing a kitsch scene which appeared to parody Leonardo da Vinci's famous "Last Supper" painting of Jesus Christ and his disciples.
All four sides in Group B were tied on three points going into the last matches, but Javier Mascherano's Argentina qualified by beating Ukraine 2-0 in Lyon while Morocco eased through with a 3-0 victory against Iraq in Nice.