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The idea of a goodwill tour of a foreign country is to get its inhabitants to, well, like you.

Perhaps that's why Houston Rockets guard Bobby Brown decided to autograph-itti the Great Wall of China. He even added his uniform number to help people recognize him.

And then he posted on Monday a picture to Weibo, a homegrown Chinese service similar to Twitter. (The post has been deleted.)

Brown's team was in China to play the New Orleans Pelicans, sell some apparel and spread the love. You know, generate some goodwill.

That might explain, as the South China Morning Post reports, why Brown added a message when he posted his photo.

"Had a blast at the Great Wall of China today," it read.

It may have come as a surprise to him that he got blasted.

"Are you proud of your carving?" one Weibo user asked. "This is a part of world heritage, not the toilet of your home."

I'm not sure I would sign the toilet of my home, but perhaps NBA players do.

As Beijing Youth Daily reports, defacing the Great Wall is illegal.

Once he'd realized he was being criticized, Brown posted a subsequent message.

"I'm so sorry for this!! I apologize I didn't mean any harm by this, I respect the Chinese culture, I made a [sic] honest mistake ... hope you forgive me," the 32-year-old point guard wrote.

The post featured emojis, including the handshake emoji, so you know it was sincere. (The post has since been deleted.)

The Houston Rockets didn't immediately respond to a request for comment.

The Chinese government realizes that foreigners enjoy leaving their mark. So two years ago, it set up so-called graffiti zones where tourists could leave messages and leave ancient artifacts whole.

Some might muse that at least Brown didn't post a selfie with his work. After all, he's not the first tourist to have defaced or even destroyed a historic monument in order to snap a selfie.

Last year, two women carved their initials into the wall of Rome's Colosseum, apparently to make a more original selfie.

Earlier this year, a man climbed a 126-year-old statue in the middle of Lisbon in order to take a selfie.

The statue crumbled.

Tourists abroad. You'd think they owned the place.