Ancient Shu Festival: the Seal of the Seal

The high priest placed the "Seal of Sealing" on the altar and activated it with a spell. I don't know what happened in this time and space. I was suddenly transported to another time and space by a beam of light, and it was still the same store. But everything that just happened turned into nothingness. At this moment, I am in the ancient Shu Museum in the 21st century AD in China, looking at everything real in front of me, and I can't tell which era is a dream for me. But I know that the terrible sealing things mentioned by the master and the high priest did not happen. Maybe, it was just a dream.