The five-time world champions travelled to Peru with a full squad on Monday, having reported no positive coronavirus cases during mandatory daily tests.
"Freestyle football is attractive to the ordinary audience so it can help promote football," she said.
"As a young team, we haven't played many tough games like this, so we cherish it a lot," Sun noted.
The first half began with both sides looking to pressure the other high up the field and fruit of that pressure the Swiss forced the first chance of the game when De Gea was forced into a flying save to deny Loris Benito's powerful left foot shot from inside the area.
"It was a very hard and equally balanced match. The initial tie was fair and then we got lucky in the penalty lottery," said Slovakia captain Marek Hamsik afterwards.
Facing a perfect Nadal, Djokovic was unable to hold any of his three service games in the first set, and finally secured his first service of the match in the opening game of the second set, after saving three break points. But the Spaniard quickly broke twice in the third and fifth game to storm to a 4-1 lead.
It took the five-time world champions just 16 minutes to find the target, with Paris Saint-Germain defender Marquinhos meeting a curling Danilo cross with a powerful header from the edge of the six-yard box.
"Defense is quite vital in such an intense game," he noted.
He added, "Tokyo continues to be the best prepared Olympic city. The health and safety of all concerned remain our top priority."
Brazil will also play Peru in another World Cup qualifier in Lima next Tuesday. Enditem
The Heat led for most of the game, thanks to brilliant performances from Butler and Robinson, but the Lakers came roaring back in the fourth quarter to take the lead behind the outstanding play of James.