 On the other hand, with the Qing dynasty style seventy-percent overlapping, the first plate tile was overlapped seventy percent, forty percent, and ten percent by the second, third and fourth tiles, respectively; thus even if the second and the third tiles developed cracks, there would be no leakage.Glazed tubular tiles used at the eave edge have an outer end made into a round shape top, often moulded with the pattern of dragon.Eave-edge plate tiles have their outer edges decorated with triangles, to facilitate rain-shedding.