Astro Xiao Tai Yang (; English: Astro the Little Sun, Astro Little Sun, Astro Tiny Sun or Astro Small Sun or simplified as Astro XTY) is a video-on-demand channel (formerly from a 24-hour television channel) targeting Mandarin-speaking children aged 4âÂÂ12 years old, providing educational and entertainment programmes. The channel line up consists of preschool learning, animation, music, science and arts.