One of them, the Xishuang Lou (), located in Xi'an Village a few kilometers north of Xiazhai town center, has been described by some researchers as the "largest of the rectangular [tulou] in existence".
One of the tulou structures, known as the Xishuang Lou, situated in Xi'an Village a few kilometers north of Xiazhai town center, is considered by some to be the largest among the rectangular ones.