Four-year-old Chen Aichen was sitting on the sofa watching cartoons when her kindergarten school bag suddenly shone with light. The next second, she was standing in the Imperial Garden of Tai Chi Palace of the Tang Dynasty.
Here, she met Princess Li Mingda of Jinyang - Sizi, who was lingering on the sick bed, suffering from anorexia and cough.
A box of strawberry milk, a few White Rabbit toffees, snacks, fever-reducing patches, and children's medicine in a schoolbag have become gifts spanning thirteen hundred years.
The little girl who appeared out of thin air made the palace guards regard her as a monster, and also made Tang Taizong Li Shimin shocked and suspicious.
There are no earth-shattering magical powers, only the purest kindness of children. Modern snacks whetted the princess's tight appetite, and children's medicine brought the seriously ill Sizi back from high fever, coughing and wheezing time and time again.
Two little girls separated by thousands of years of time and space share snacks under the sweet-scented osmanthus tree, play bubble machines and yo-yos, and agree to be lifelong good friends.
On one side is the turbulent Zhenguan court, with the emperor's balance, the undercurrent of the family, and the unseen suspicions;
On one side are the worries of ordinary modern parents. Every time they travel through time is an adventure. The flashing blue and red light of the schoolbag maintains the bond between the two ends.
"Sizi, I'm here to see you again!"