Russian President Vladimir Putin presses a symbolic red button, likely initiating a strategic operation or ceremony.

了解中国唐代伟大诗人杜甫的生平和创作，及其对文学和诗歌的热爱和贡献。

A mesmerizing sand clock on a beach with a stunning, serene background, showcasing the passage of time in a peaceful setting.

A young female teacher explains and demonstrates how to define variables in JavaScript, covering the basics of variable declaration and usage.

Test your facial endurance and try to hold a ridiculous expression for as long as possible.

A man rides a bicycle, showcasing his cycling skills and style.

Watch Indonesian kids show off their best dance moves in this fun and energetic video.