HANOI, Vietnam (AP) — North Korean leader Kim Jong Un spent the eve of his summit with Donald Trump traveling around Hanoi in his armored limousine Tuesday, his squad of encircling bodyguards in tow as he visited the North Korean Embassy, with hundreds of visiting journalists and thousands of local citizens following in his wake.

Trump and Kim are to meet Wednesday in their second summit aimed at addressing perhaps the world’s biggest security challenge: Kim’s pursuit of a nuclear program that stands on the verge of viably threatening targets around the planet.

But before the summit began, Kim took some time to venture out of his locked-down hotel and check out parts of Hanoi, including his nation’s embassy, where a loud cheer went up as he entered the compound.

Soldiers, police and international journalists thronged the streets outside Hanoi’s Melia Hotel where Kim is staying, and hundreds of eager citizens stood behind barricades hoping to see the North Korean leader. As Vietnamese, North Korean and U.S. flags fluttered in a cold drizzle, dozens of cameras flashed and some citizens screamed and used their mobile phones to capture Kim’s rock-star-like arrival.

“I like him,” local resident Van Dang Luu, who works at a nearby bank, said of Kim. “He is very young and he is very interesting. And he is very powerful,” she said. “Trump is not young, but I think he is very powerful.”

Vietnam’s authoritarian leaders set up a huge security apparatus to welcome Kim, shutting long stretches of highway and locking down swaths of the bustling capital city. Earlier in the morning, Kim, grinning broadly and waving, stepped off his armored train at the end of a long ride that started in Pyongyang and wound through China to the Vietnamese border. He shook hands with officials as Vietnamese troops in crisp, white uniforms and black boots stood at attention on a red carpet at the Dong Dang railway station on the China-Vietnam border.

Hours ahead of his border crossing, footage from Japanese TV network TBS showed Kim taking a pre-dawn smoke break at a train station in China, a woman who appeared to be his sister, Kim Yo Jong, holding a crystal ashtray at the ready.

Vietnamese officials have shared few details about the specifics of a summit that the world will be watching closely.

Trump was flying to Hanoi from Washington and was to arrive later Tuesday.

Although many experts are skeptical Kim will give up the nuclear weapons he likely sees as his best guarantee of continued rule, there was a palpable, carnival-like excitement among many in Hanoi as the final preparations were made for the meeting. There were also huge traffic jams in the already congested streets.

Officials in Hanoi said they only had about 10 days to prepare for the summit — much less than the nearly two months Singapore had before the first Trump-Kim meeting last year— but still vowed to provide airtight security for the two leaders.

“Security will be at the maximum level,” Vietnamese Deputy Minister of Foreign Affairs Le Hoai Trung told reporters.

The ultra-tight security will be appreciated by North Korean authorities, who are extremely vigilant about the safety of Kim, the third member of his family to rule the North with absolute power. Kim’s decision to take a train, not a plane, may have been influenced by the better ability to control security.

Vietnam is eager to show off its huge economic and development improvements since the destruction of the Vietnam War, but the country also tolerates no dissent and is able to provide the kind of firm hand not allowed by more democratic potential hosts.

“I really hope to catch a glimpse of Kim Jong Un. He is an interesting man. And he rarely travels anywhere so it would be great to see him here,” said Nguyen Trong Toan, a retired teacher who was waiting by the side of the street on Kim’s expected travel route.

There are high expectations for the Hanoi summit after a vague declaration at the first meeting in June in Singapore that disappointed many.

Trump, via Twitter, has worked to temper those expectations, predicting before leaving for Hanoi a “continuation of the progress” made in Singapore but adding a tantalizing nod to “Denuclearization?” He also said that Kim knows that “without nuclear weapons, his country could fast become one of the great economic powers anywhere in the World.”

North Korea has spent decades, at great political and economic sacrifice, building its nuclear program, and there is widespread skepticism among experts that it will give away that program cheaply.

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By FOSTER KLUG , Associated Press

AP journalists Yves Dam Van in Dong Dang, Hyung-jin Kim, Adam Schreck and Hau Dinh in Hanoi, and Kim Tong-hyung in Seoul, South Korea, contributed to this report.

Vietnamese security stand outside the entrance to Dong Dang train station where North Korean leader Kim Jong Un is expected to arrive at the border town with China, in Dong Dang, Vietnam, Monday, Feb. 25, 2019. With North Korean leader Kim Jong Un on an armored train barreling through China toward Vietnam’s capital, and U.S. President Donald Trump about to board a jet for Hanoi, Vietnamese officials scrambled Monday to finish preparations for a rushed summit that will capture global attention. (AP Photo/Minh Hoang)

A train, center, similar to ones seen during previous visits to China by North Korean leader Kim Jong Un is seen at Changsha station in central China’s Hunan province, Monday, Feb. 25, 2019. With Kim on an armored train barreling through China toward Vietnam’s capital, and U.S. President Donald Trump about to board a jet for Hanoi, Vietnamese officials scrambled Monday to finish preparations for a rushed summit that will capture global attention. (Yonhap via AP)

President Donald Trump waves while boarding Air Force One for a trip to Vietnam to meet with North Korean leader Kim Jong Un, Monday, Feb. 25, 2019, in Andrews Air Force Base, Md. (AP Photo/ Evan Vucci)

In this image from video, North Korean leader Kim Jong Un waves from a car after his arrival by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of the second summit with U.S. President Donald Trump. (AP Photo)

North Korean leader Kim Jong Un waves from a car after arriving by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of his second summit with U.S. President Donald Trump. (AP Photo/Minh Hoang)

North Korean leader Kim Jong Un waves upon arrival by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of his second summit with U.S. President Donald Trump. (AP Photo/Minh Hoang)

North Korean leader Kim Jong Un, center, walks after arriving by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of his second summit with U.S. President Donald Trump. (AP Photo/Minh Hoang)

North Korean leader Kim Jong Un gets on a car after arriving by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of his second summit with U.S. President Donald Trump. (AP Photo/Minh Hoang)

In this image from video, North Korean leader Kim Jong Un waves from a car after his arrival by train in Dong Dang in Vietnamese border town Tuesday, Feb. 26, 2019, ahead of the second summit with U.S. President Donald Trump. (AP Photo)

The motorcade transporting North Korean leader Kim Jong Un makes it way down a street in Hanoi, Vietnam, Tuesday, Feb. 26, 2019. Kim is in town for a summit with President Donald Trump. Trump and Kim first met last June in Singapore. But that face-to-face hasn’t resulted in any solid plan for ridding the North of nuclear weapons. (AP Photo/Susan Walsh)

KILL: EDITORS AND LIBRARIANS: KILL FROM YOUR SYSTEMS AND ARCHIVES BKWS304 SLUGGED TRUMP KIM SUMMIT KIM’S SMOKING BREAK AND TRANSMITTED ON TUESDAY, FEB. 26, 2019. THIS IMAGE WAS ORIGINALLY AUTHORIZED TO BE MADE FROM VIDEO BUT HAS NOW BE RESCINDED – In this image made from Japan’s TBS TV video on early Tuesday, Feb. 26, 2019, North Korean leader Kim Jong Un, a habitual smoker, takes a pre-dawn smoke break at the train station in Nanning, China, hours before his arrival in Vietnam for his high-stakes summit with President Donald Trump over resolving the international standoff over the North’s nuclear weapons and missiles. (TBS-JNN via AP)