Indonesian soldiers take part in a handling riots practice ahead of the elections at their military home base in Banda Aceh, Aceh province on April 9, 2019. (Photo by Chaideer Mahyuddin/AFP Photo)

Anti-frost candles burn in apricot plantations to protect flowering buds and blossoms from frost in the midst of the Swiss Alps, in Saxon, Canton of Valais, Switzerland, 05 April 2019. With an unusually low temperature forecast for the season, fruit growers try to protect their buds from frost damage with two different means, icy water or large candles. (Photo by Valentin Flauraud/EPA/EFE)

Katie Boulter celebrates winning her match against Kazakhstan for Great Britain who went on to win the Federation Cup Tennis World Group II play-off at Copper Box Arena in London, England on April 21, 2019. (Photo by Shaun Brooks/Action Plus via Getty Images)

Members of team China perform during the Artistic Swimming Team Free Final at the FINA Swimming World Championships in Gwangju, South Korea, 19 July 2019. (Photo by Antonio Bat/EPA/EFE/Rex Features/Shutterstock)

A pro-government supporter scuffles with an anti-extradition supporter outside the office of pro-China lawmaker Junius Ho in Tsuen Wan in Hong Kong, China on July 22, 2019. Hong Kong demonstrators gathered for another weekend of protests against the controversial extradition bill and with a growing list of grievances, maintaining pressure on Chief Executive Carrie Lam. (Photo by Edgar Su/Reuters)

A string art picture made by artist Ani Abakumova in a workshop in the village of Romashkovo in Moscow Region, Russia on August 2, 2019. Ani Abakumova and her husband Andrei Abakumov create string art replicas of famous paintings. Andrei makes computer calculations that show patterns for future images, then Ani winds coloured strings around nails hammered around a plywood board. (Photo by Anton Novoderezhkin/TASS)

A view of the Lakhta Center multifunctional complex under construction in St Petersburg' s Primorsky District and a cable stayed bridge of the Western High- Speed Diameter toll motorway in St Petersburg, Russia on March 5, 2018. (Photo by EPA/EFE/Rex Features/Shutterstock)

A market trader in Gaibandha in Bangladesh on September 25, 2019, surrounded by bottle gourd vegetables, which sell for around 3p ($ 0.04) each. (Photo by Solent News)