The tunnels of the Jade Dragon’s base of operations bear a striking resemblance to those of the Dai Li of Lake Laogai from the time of Avatar Aang. The greatest difference from these outdated rat holes is the very composition of the bricks that line the tunnels. With a peppering of platinum during their molding, each brick is rendered unbendable to earthbenders, though the earth that is but a few inches away is most definitely not...