Time flies! Summer vacation is about to end, and kids will return to school soon. Let's see how kids from different countries react on their first school day. Photos: IC

First graders in Germany attend an enrollment ceremony holding their school bags at Merian School in Frankfurt am Main, Germany on Aug 14, 2012.

Children cry on the first day of school at Sane Guruji English Medium High School in Dadar, Mumbai, India on June 15, 2017.

Teary-eyed first grade student Trinity Nazario, 6, cries as she waits for her father Angel Nazario in Port St. Lucie, Florida, US on Aug 20, 2007.

A Japanese girl enjoys a moment in her classroom as her elementary school, which has been closed following a massive earthquake, resumes classes in the city of Kumamoto, Kumamoto Prefecture, southwestern Japan on May 9, 2016.

A Cuban girl, right, cries while lining up for classes on the first day of school in Havana, Cuba on Sept 6, 2004.

A Chinese boy is about to break down on his first day to kindergarten in Tianjin on Sept 11, 2011.

A girl cries while a boy tries to climb a chain-link inside their school during the first day of the school year in Managua, Nicaragua on Feb 4, 2008.

First-grade pupils with flowers are seen at the school lineup on Knowledge Day, the day when the new school year traditionally begins in Russia on Sept 2, 2013.