Epoch Chain Number

On January 9, 2119, the world-famous science weekly "Nature" published two articles, revealing a signal sent from the depths of the universe. This paper was reported by the media and quickly attracted the attention of the world. For a time, countless speculations were rampant. Is it a test signal sent by aliens? Or is it a product left behind by a celestial explosion? Only Jiang He knows that it is the countdown to the great cleansing of the universe.