When will future generations build a tablet without words for Wu Zetian?

It was established after the death of Wu Zetian (705 years).

There is no tablet in Ganling, which was erected by Wu Zetian. Located in Ganling, 50 kilometers northwest of Xianyang City, Shaanxi Province. On the east side of Sima Dao, Ganling is surrounded by Tuque in the north, Weng Zhong in the south and the sacred monument in the west. Magnificent, magnificent. Ganling, located in Liangshan, 6 kilometers north of Ganxian County, Xianyang City, Shaanxi Province, is the burial tomb of Tang Gaozong Li Zhi and Wu Zetian. There are two huge stone tablets in front of the tomb, one in the west is called "sacred tablet", and the other in the east is Wu Zetian's wordless tablet. The "memorial tablet" is a tablet erected by Wu Zetian to praise Gao Zong. She also personally wrote more than 5,000 words of inscriptions, blacked out and filled with gold powder. On the east side is Wu Zetian's wordless tablet.

The tablet without words is named because there is no word engraved on the original tablet. During the Qianlong period of the Qing Dynasty, the Book of Scholars in Yongzhou recorded: "There are dragons and phoenixes engraved on the side of the monument, and there are no words on its surface and no words on its yin.