Where can I find or buy sand to hibernate turtles in Harbin? By the way, do you still want to hibernate?

If there is no sand, use water. There is no need to use sand. Put the water in shallow water and don't hibernate before crossing the turtle's back. Be careful not to let the water dry. You can bring sand to buy at the ornamental fish market. If not, go to building materials or construction sites. The sand should be wet. Don't hibernate, just keep it above 25 degrees, use a heating rod.