HONG KONG (AP) — Hong Kong welcomed a new pair of giant pandas gifted by Beijing on Thursday with a lavish ceremony, raising hopes for a boost to the city's tourism.

An An and Ke Ke are the third pair of giant pandas to be sent to the city from mainland China since the former British colony returned to Chinese rule in 1997. Their arrival came after their new neighbor, Ying Ying, gave birth to twins last month and became the world’s oldest first-time panda mother on record.

The newcomers bring the Ocean Park panda population to six, including the father of the twins, Le Le. Ocean Park chairman Paulo Pong Kin-Yee noted that would make three generations of giant pandas at the popular Hong Kong zoo and aquarium attraction.

Chief Executive John Lee said An An is a 5-year-old male panda who is agile, intelligent and active, while Ke Ke, a 5-year-old female, is good at climbing, cute and has a gentle temperament.

The new arrivals will be in quarantine for two months to adapt to their new home. Lee expressed hope that the public could meet the new bears in mid-December.

In October, the government will invite residents to propose new names that showcase the pandas’ characteristics.

Tourism industry representatives are optimistic about the potential impact of housing six pandas, hoping it will boost visitor numbers in Hong Kong. Officials have encouraged businesses to capitalize on the popularity of the new bears and newborn cubs to seize opportunities in what some lawmakers have dubbed the “panda economy."

Pandas are considered China’s unofficial national mascot. The country's giant panda loan program with overseas zoos has long been seen as a tool of Beijing’s soft-power diplomacy. Giant pandas are only found in China's southwest and their population is under threat from development.

But caring for pandas in captivity is expensive. A zoo in Finland agreed with Chinese authorities to return two loaned giant pandas to China more than eight years ahead of schedule because they were too costly for the facility to maintain amid declining visitors.

Hong Kong's Ocean Park has been hosting pandas since 1999, when the first pair, An An and Jia Jia, arrived in the financial hub shortly after the former British colony returned to China.

Jia Jia, who died at 38 in 2016, is the world’s oldest-ever panda to have lived in captivity. The average lifespan for a panda in the wild is 18 to 20 years, while in captivity it’s 30 years, according to the Guinness World Records.