Duo Yun Xuan
... that Duo Yun Xuan held the first art auction on the Chinese mainland?
... that <b id="mwBTU"><a href="./Duo_Yun_Xuan" id="mwBTY" rel="mw:WikiLink" title="Duo Yun Xuan">Duo Yun Xuan</a></b> held the first art auction on the <a href="./Mainland_China" id="mwBTc" rel="mw:WikiLink" title="Mainland China">Chinese mainland</a>?