Son Heung-min will put South Korea "above all else" at the World Cup, despite having the opportunity to become his nation's outright leading scorer at the finals.

The 2002 semi-finalists are gearing up for their 11th successive appearance at the tournament, with only Brazil, Argentina, Germany and Spain currently on longer streaks.

It will be Son's fourth World Cup, with Korea's all-time leading appearance maker having scored for his nation in 2014 and 2018, while captaining them in Qatar four years ago.

The Los Angeles FC forward has netted three times at the finals overall, matching Park Ji-sung and Ahn Jung-hwan for the joint-most by a South Korea player.

They will face Czechia, co-hosts Mexico and South Africa in Group A, with that wide-open draw seemingly giving them a strong chance of a run into the knockout rounds.

And the 33-year-old is optimistic, despite speculation that his best years are now firmly behind him.

"A lot of people are worried, but I'm only worried if I'm not playing well," he told reporters at Korea's training camp in Salt Lake City.

"I don't think it's the case now. Physically, I am feeling great."

On potentially scoring a record-breaking fourth World Cup goal for his country, he added: "Obviously, it's impossible not to be hearing about these records.

"People have been talking about them, and fans have taken great interest in them.

"But I've just not been thinking too much about them. If I put the team above all else and worry about how I can help the team first, then goals will naturally follow."

South Korea begin their campaign against Czechia on June 11, the same day as Mexico open the 48-team tournament against South Africa.

Hong Myung-bo's side are aiming to improve on their run to the last 16 in 2022, but they arrive off the back of a difficult spell of form, which has seen them beaten by Ivory Coast and Austria in recent friendlies.

"Of course, we want to get to a higher place this time and do better than the last World Cup," Son added. 

"But we can't predict the future. Other teams will be preparing just as hard."