They were the all-powerful leaders or presidents of countries, they were willing to challenge the Chinese old word "He who has never been to the Great Wall is not a true man". During a trade mission in Beijing China, many leaders visited the Great Wall en masse and gave highly praise and respect, Obama, Cameron, Clinton, Bush, Yeltsin, Nixon, Reagan, Rabin...

Britain's Prime Minister David Cameron walks next to Chinese students as he visits the Juyongguan Great Wall during a trade mission in Beijing, Nov 10, 2010.

Canada's President Stephen Harper and wife Laureen visited the Great Wall of China at Badaling on December 3, 2009.

Barack Obama, President of the United States, visited the Badaling Great Wall in November 2009, and said, “It's majestic. It's magical. It reminds you of the sweep of history, and that our time here on Earth is not that long, so we better make the best of it.”

Russian's former President Vladimir Putin and his wife visited the Badaling Great Wall on December 3, 2002.

When American President George W. Bush visited the Great Wall at Badaling in February 2002, he said: "The wall's the same, the country's changed a lot."

Bill Clinton, former President of the United States, visited the Mutianyu Great Wall in 1998, and said, “It was great.”

The late Israeli Prime Minister Yitzhak Rabin visited the Badaling Great Wall on October 11, 1993.

Mikado Akihito and his wife visit the Great Wall on October 24, 1992.

Rissia's former President Boris Nikolayevich Yeltsin and his wife visited the Badaling Great Wall in 1992.

Queen Elizabeth II of the United Kingdom of Great Britain and Northern Ireland visited the Badaling Great Wall on October 14, 1986. and she side, "I've been so many place in the world, But the Great Wall is most beautiful".

Ronald Reagan, former President of the United States, visited the Great Wall in 1984, and said, “What can you say except it’s awe-inspiring? It is one of the great wonders of the world.”

President Richard Nixon and his wife visited the Great Wall during their stay in China，Feb 24, 1972. and said with admiration：“This is indeed a great building and a wonder of the human world. Now we are on the Great Wall to become the true man'as Chairman Mao has commended.”