From 1420 to today, the Forbidden City is over 600 years old! Xiaoxuan and Xiaoya come to the Palace Museum again, meeting new friends like glazed tiles, colourful decorative paintings, partition boards, dougong, beam-columns, caissons, and more. For 600 years, they have sheltered and beautified the palaces, acting as the most loyal and sturdy guardians of the Forbidden City. Let's unlock the little secrets of these grand palaces together.