Chinese President Xi Jinping opened the COVID-delayed 19th Asian Games in the Eastern city of Hangzhou during a spectacular and at times raucous ceremony on Saturday, which organizers hope will lift the mood in a nation struggling with an economic slump.

Spectators in the city's 80,000-capacity stadium let out a huge roar as Xi was introduced and walked in to sit with visiting dignitaries including International Olympic Committee President Thomas Bach and Syrian President Bashar al-Assad, Reuters reported.

The Games, delayed a year due to China's measures to combat the COVID-19 pandemic, will be the country's biggest sporting event in over a decade in several metrics, with around 12,000 athletes from 45 nations competing in 40 sports.

After the Chinese flag was brought out, the first team out was Afghanistan, whose female athletes, based abroad due to sport for women being banned by the Taliban, walked together with their male counterparts.

Several teams including Chinese Taipei were vocally welcomed by the spectators, but none more than the home team, whose athletes are expected to dominate the medals table once again.

They also mark a stark contrast to the cheerless Beijing 2022 Winter Olympics which took place under China's strict zero COVID conditions which lasted for nearly three years from January 2020 until late 2022.

“I feel excited, particularly as a Hangzhou local," said a man surnamed Zhao on his way into the stadium. "It’s a great chance to show the world how nice our city is… it was also delayed by a year. But that gave us a chance to prepare even better.”

In an often spell-binding ceremony intended to burnish Hangzhou's status as one of China's centers of technology and creativity, dozens of balletic dancers hovered above a digitally-projected lake in the wake of a flotilla of sail-boards.

In a modern take on the traditional lighting of the cauldron, a huge, digitally animated torchbearer "ran" the length of the stadium before settling to loom above the actual torch-bearer, China's Olympic champion swimmer Wang Shun.

In sync, the pair lit a huge, multi-pronged cauldron, prompting another bout of cheering and soon after, a digital firework display.

But many of those not lucky enough to get a ticket grumbled about disruption.

A sizable "traffic control area" around the city's Olympic stadium was blocked off, at least one metro station was shut and other Games centers were closed and deliveries were disrupted on Saturday.

Some felt the security measures, always tight wherever Xi goes for a visit, were overdone.

"I think it shows they're too nervous, right?", said 45-year-old Hangzhou resident Li Jian. "I think we should be a little more confident."

One local social media user was told due to safety rules surrounding the Games a pencil sharpener they had ordered could not be delivered. "How dangerous is the sharpener?," the user wrote. "Will I be able to use it to kill foreign country leaders?"

Organizers have not disclosed spending on the Games, though the Hangzhou government has said it spent more than 200 billion yuan ($30 billion) in the five years through 2020 on transport infrastructure, stadiums, accommodation and other facilities.

Organizers hoped a high-tech opening ceremony on Saturday will help drum up excitement for the Games. Interest at home has been muted as the economy sputters and some question the cost of hosting the mega-event.

Dozens of smiling volunteers greeted arriving journalists in Hangzhou this week, with some expressing relief that the event was finally getting started.

The official slogan of the event, "Heart to Heart, @Future", represents the goal of uniting the people and countries of Asia through these games, officials have said, but geopolitical tensions and rivalries threatened to overshadow that effort this week.

Xi called on the West to lift sanctions on Syria and offered Beijing's help in rebuilding the war-shattered country on Friday during rare talks with the long-ostracized Syrian leader Bashar al-Assad.

Also on Friday, India protested over a visa issue that affected three of its athletes at the games, leading India's sports minister Anurag Thakur to cancel his trip.

Japan’s top government spokesperson said on Tuesday that Tokyo would do its utmost to ensure the safety of Japanese nationals in China as the release of treated radioactive water from the Fukushima nuclear power plant into the sea has chilled ties.

"We should promote peace through sports, adhere to the principle of goodwill towards neighbors and mutual benefit and... resist the cold war mentality and confrontation between camps," Xi told dignitaries including Bach and Assad at a banquet before the ceremony on Saturday, state news agency Xinhua reported.