The guest list for President-elect Donald Trump’s inauguration next month could include the world’s most powerful communist leader.

According to CBS News, Trump invited Chinese President Xi Jinping to attend the inauguration on January 20, though it’s unclear if he’s accepted.

Karoline Leavitt, the spokeswoman for Trump’s transition, confirmed the invitation and said world leaders are “lining up to meet with President Trump because they know he will soon return to power and restore peace through American strength around the globe.” The invitation to Xi, the head of the Chinese Communist Party, is an example of Trump “creating an open dialogue with leaders of countries that are not just our allies but our adversaries and our competitors, too,” Leavitt told Fox News.

Xi sent Trump a faux-conciliatory message after he won election last month, writing that “history tells us that both countries stand to gain for cooperation and lose from confrontation.” Beijing has since begun trying to dictate terms to the incoming administration around its position on Taiwan.

Former House speaker Newt Gingrich told Fox that Trump’s invitation to Xi sends a global “signal” and is part of the president-elect’s plan to always “be on offense.” It comes as Trump has vowed to increase tariffs on China on his first day back in office.

When Xi visited San Francisco for the Asia-Pacific Economic Cooperation summit last year, the Chinese government incentivized pro-CCP activists to attack anti-Xi protesters, in part by paying for the hotels and meals, the Washington Post reported in September. At least four Chinese diplomats were among the crowd of pro-CCP protesters.

Trump’s team is also considering hosting other world leaders at the Capitol on inauguration day. Prime Minister Viktor Orbán of Hungary, who just visited with Trump at Mar-a-Lago, is “still considering” whether to attend the inauguration, a source told CBS.

While ambassadors and diplomats often are invited to inaugurations, no foreign leader has attended one in at least 150 years, CBS reported, citing State Department records dating back to 1874.