Christmas.

As organized, the next days he gathers all the children, Cyno and the extra grown-up and opens a portal to go to Earth. After a quick stop to his apartment to get everyone changed to appropriate attires, he proceeds to teleport everyone to Diagon Alley, from which they can easily reach the Muggle-London. A ride on the subway and a little extra walk leads them to Hamleys, the biggest and oldest toy store in the entire world.

Chan leads inside — he had to carry LeYang in his arms the whole walk — and stops by the carts, carefully placing the little fat one to the floor. «Now, then, take one cart each», he says to Cyno and the other, as he himself takes one. «We are going to play a game. Each child will choose one of the carts we take and then fill it with… whatever catches your eyes. Anything you like, whichever size and style. Don't worry about anything, just take anything you like. The only rule is that the last layer can't go over this line.» He shows the border of the carts. «You can fill the cart but not make a whole mountain that would collapse on us. All clear? Any questions?»