A dahlia is seen amid lanterns during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A social-distancing ambassador monitors visitors to ensure they comply with measures to curb the outbreak of the coronavirus disease (COVID-19) during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors wear face masks during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

People check out information boards on Chinese zodiac animals during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A social-distancing ambassador monitors visitors to ensure they comply with measures to curb the outbreak of the coronavirus disease (COVID-19) during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors wearing face masks look at light sculptures of flowers during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A sign reminds visitors to keep their masks on due to the ongoing coronavirus disease (COVID-19) outbreak during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A general view of the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A visitor wearing a face mask snaps a selfie during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors wearing face masks take pictures during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera TPX IMAGES OF THE DAY

A woman uses a smartphone to document her visit to the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors take pictures during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors wearing face masks pose with ox sculptures during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Visitors pose for a wefie during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

A family pose for a wefie while wearing their face masks during the annual Dahlia Dreams floral display ahead of the Chinese Lunar New Year of the Ox, otherwise known as the Spring Festival, at Singapore's Gardens by the Bay, January 31, 2021. REUTERS/Loriene Perera

Dahlia Otto's Thrill flowers bloom during the annual Dahlia Dreams floral display which features sculptures of the 12 zodiac animals to celebrate the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

A woman poses with a sculpture of a girl in traditional Chinese attire during the annual Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

Visitors walk past sculptures that represent the 12 zodiac animals during the annual Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

Dahlias surround sculptures of a horse, snake and ram, which are part of the 12 zodiac animals, during the annual Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

A close-up view of a dahlia is seen during the annual Dahlia Dreams floral display which features topiary-like sculptures of the 12 zodiac animals to celebrate the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

People view the annual Dahlia Dreams floral display which features topiary-like sculptures of the 12 zodiac animals to celebrate the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

Visitors pose for a photo under a topiary-like sculpture of an archway designed to resemble the Dongdan (Eastern Single) Archway that was built during China's Ming Dynasty, during the annual Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

A close-up view of a dahlia is seen during the annual Dahlia Dreams floral display which features topiary-like sculptures of the 12 zodiac animals to celebrate the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

A close-up view of a dahlia is seen during the annual Dahlia Dreams floral display which features topiary-like sculptures of the 12 zodiac animals to celebrate the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

Visitors stand in front of a plant sculpture which repeatedly features the Chinese character commonly displayed during Lunar New Year celebrations at the annual Dahlia Dreams floral display which showcases topiary-like sculptures of the 12 zodiac animals to mark the Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. The Chinese characters read: "Fortune". REUTERS/Loriene Perera

Visitors pose in front of a plant sculpture which features a Chinese character commonly displayed during Lunar New Year celebrations at the annual Dahlia Dreams floral display which showcases topiary-like sculptures of the 12 zodiac animals to mark the Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. The Chinese character reads: "Fortune". REUTERS/Loriene Perera

Visitors walk past a topiary-like sculpture of a rat in traditional Chinese attire at the annual Dahlia Dreams floral display which showcases plant sculptures of the 12 zodiac animals to mark the upcoming Lunar New Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. REUTERS/Loriene Perera

A close-up view of a plant sculpture which repeatedly features the Chinese character commonly displayed during Lunar New Year celebrations at the annual Dahlia Dreams floral display which showcases topiary-like sculptures of the 12 zodiac animals to mark the Year of the Rat at Singapore's Gardens by the Bay, January 19, 2020. The Chinese characters read: "Fortune". REUTERS/Loriene Perera

Swimming - 18th FINA World Swimming Championships - Women's 4x100m Freestyle Victory Ceremony - Nambu University Municipal Aquatics Center, Gwangju, South Korea - July 21, 2019. Silver medallists Mallory Comerford, Abbey Weitzeil, Kelsi Dahlia and Simone Manuel of Team U.S. pose. REUTERS/Kim Hong-Ji

A dahlia is seen during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

People stand inside a Chinese pavilion during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A man uses his smartphone to take pictures of pig decorations during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Dahlias are seen during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A camellia is seen during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A child reaches for the tassel of a traditional Chinese lantern during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Flowers are seen in front of red traditional Chinese lanterns during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A woman enjoys a view of dahlias from a Chinese pavilion during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Dahlias are seen during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Dahlias are seen during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

People use their smartphones as they walk past Senrinzaki (Thousand Blooms) chrysanthemum arrangements during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A woman uses her smartphone to take a selfie during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

A child looks on from her father's shoulders during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Visitors pose for a wefie during the Dahlia Dreams floral display which celebrates the upcoming Lunar New Year of the Pig at Gardens by the Bay in Singapore, January 24, 2019. REUTERS/Loriene Perera

Swimming - 14th FINA World Swimming Championships (25m) - Women's Butterfly 100m Finals - Hangzhou, China - December 16, 2018. Kelsi Dahlia of the U.S. poses. REUTERS/Aly Song

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. Picture taken with fish eye lens. REUTERS/Yves Herman TPX IMAGES OF THE DAY

A part of a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

Gardeners adjust flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A gardener adjusts flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A part of a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A part of a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. Picture taken with fish eye lens. REUTERS/Yves Herman

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. Picture taken with fish eye lens. REUTERS/Yves Herman

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. Picture taken with fish eye lens. REUTERS/Yves Herman TPX IMAGES OF THE DAY

A 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias is seen at Brussels' Grand Place, Belgium August 16, 2018. Picture taken with fish eye lens. REUTERS/Yves Herman

A gardener adjusts flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A gardener adjusts flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A gardener adjusts flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman

A gardener adjusts flowers on a 1,800 square meters flower carpet on the theme "Guanajuato, cultural pride of Mexico" and made with over 500,000 dahlias and begonias, at Brussels' Grand Place, Belgium August 16, 2018. REUTERS/Yves Herman