WATCH: North Korean leader Kim Jong Un's motorcade arrives in China for meeting with Xi Jinping

Mark Schiefelbein/AP

A train similar to one seen during previous visits by North Korean leader Kim Jong Un arrives at Beijing Railway Station in Beijing, January 8, 2019.

• North Korean leader Kim Jong Un arrived in China with his wife, Ri Sol Ju, and other senior officials for a four-day trip.
• North Korean propaganda outlets claimed Kim had been invited to the country by Chinese President Xi Jinping.
• The trip comes amid rumors of a second summit with US President Donald Trump, which may be held as early as this year.

North Korean leader Kim Jong Un arrived in China with his wife, Ri Sol Ju, and other senior officials for a four-day trip, according to Chinese and North Korean media reports on Tuesday.

Kim, who reportedly traveled to China on his armored train, arrived during what is believed to be his 36th birthday, according to the Associated Press. North Korean propaganda outlets claimed Kim had been invited to the country by Chinese President Xi Jinping.

The trip comes amid rumors of a second summit with US President Donald Trump, which may be held as early as this year. Representatives from the two countries reportedly held discussions in Vietnam to discuss the venue for the second summit.

"It will be announced probably in the not-too-distant future," Trump said of the summit and North Korea to reporters on Sunday. "They do want to meet and we want to meet and we'll see what happens."

The proposed summit comes after Trump met Kim in Singapore in June, the first such meeting between a sitting US president and North Korean leader, where the two signed an agreement outlining broad goals for denuclearization.

Watch video footage of Kim Jong Un's motorcade here »