Nine Gates 九蓮寶燈

Why it counts

Three ones, three nines and one of everything between, all in the same suit and entirely concealed, plus a second copy of any of them. The shape waits on all nine ranks at once.

Stacks with

A flat ten that absorbs the flush and the concealment it is made of. Won on a discard, it must have been on the true nine-tile wait.