A Venezuelan couple rests after receiving a free lunch at the "Divina Providencia" migrant shelter on the outskirts of Cucuta, on the Colombian-Venezuelan border, Colombia February 13, 2019. (Photo: VCG)

Red hearts and red roses are displayed in the window of a restaurant on the eve of Valentine's Day on February 13, 2019 in Paris, France. Valentine's Day is a celebration of love and romance for many people across the world. (Photo: VCG)

The photo shows the snowy scene at the Palace Museum in Beijing, China on Feb. 14, 2019. All tickets to the museum, which allows 80,000 visitors per day, were sold out on Thursday. (Photo: Xinhua)

Lady Gaga, right, and Mark Ronson perform "Shallow" at the 61st annual Grammy Awards on Sunday, Feb. 10, 2019, in Los Angeles. (Photo: AP)

The Swiss team celebrates after winning the team event, at the alpine ski World Championships on February 12, 2019 in Are, Sweden. (Photo: AP)

A lucky microlight pilot catches a stunning selfie flying through the air with a circular rainbow beneath him. The rainbow appears to circle the aircraft and his instructor perfectly as they fly 1,000 feet over Oahu in North Shore, Hawaii. (Photo: VCG)

Ice caves carved deep into a glacier look like an alien world on February 12, 2019 in Iceland. The magical-looking caves, carved by summer melt-water that flows through the glacier, can only be accessed between November and March, when the weather has been cold enough to solidify the caves and make them safe to crawl through. (Photo: VCG)

U.S. Marines stand their post prior to U.S. President Donald Trump and first lady Melania Trump welcoming Colombian President Ivan Duque and his wife Maria Juliana Ruiz to the White House in Washington, U.S., February 13, 2019. (Photo: VCG)

Civilians flee the Islamic State group's crumbling last holdout of Baghouz on February 13, 2019 in eastern Syria. (Photo: VCG)

People attend Pahela Falgun festival celebration in Dhaka, capital of Bangladesh, Feb. 13, 2019. (Photo: Xinhua)