Smile like Mona Lisa! Koalas in the Chimelong Safari Park, south China's Guangdong. (Photo: Xinhua)

A specimen of a giant squid measuring 8.3 meters is on display at the “Ocean Today” exhibition hall at China's first national maritime museum, in Binhai New Area in north China's Tianjin Municipality on May 1. (Photo: IC)

Passengers wait for their ride at Hangzhou East railway station in East China's Zhejiang Province on April 30. (Photo: IC)

Red Bull Toro Rosso Honda team’s Dutch driver Max Ver stappen steers his car during the qualifying session of the Baku Formula One city circuit in Baku, Azerbaijan, on April 27. (Photo: Xinhua)

Photo taken on April 27 shows a cliff village covered in snow in the Luya Mountain scenic area in Xinzhou, north China's Shanxi Province. (Photo: Xinhua)

Aircraft fly over the Santa Lucia military airbase during the Aerospace Fair 2019 in Tecamac, Mexico, on April 27. (Photo: Xinhua)

People participate in William Shakespeare's 455th Birthday Celebration Parade in Stratford-upon-Avon on April 27. (Photo: Xinhua)

Thai Royal Guard take part in a rehearsal of the upcoming Royal Coronation. (Photo: Xinhua)

People shop at a duty free shop in Haikou, capital of south China's Hainan Province, on May 2. (Photo: Xinhua)

The world's first insect-themed bookstore opens in Nanjing, East China's Jiangsu province. (Photo: VCG)