According to historical records, in the 19th year of Tang Zhenguan, after Xuan Zang returned from India, he personally designed and built a large wild goose pagoda to worship the Buddhist scriptures, gold and silver Buddha statues, relics and other treasures. No one knows where the treasures are hidden. Archaeologists believe that just like the Millennium Palace exists under the ancient tower of Famen Temple, there must be an underground palace hidden under the Dayan Pagoda, but it has not been excavated yet, and it is speculated that the It is very likely that the treasures hidden by Xuanzang were originally hidden in the palace. If one of the following is true, the above speculations cannot be questioned? ['There is no underground palace on the drawings of the Wild Goose Pagoda painted by Xuanzang.', 'Treasures were not found in the underground palace under several other ancient towers that have been excavated.', 'Archaeologists have found Buddhist scriptures brought back by Xuanzang at other locations.', 'According to historical records, all the treasures brought back by Xuanzang have been dedicated to the palace.']