A black cover.
That was the first image Xu Yuan saw after drilling out from the stone and earth-covered secret chamber.
Before entering the chamber, he had seen the azure sky, but now it had vanished, replaced by a black sky canopy that had been inverted over the Xu Residence, isolating the entire Jingjiang Xu Residence from the outside world.
But the sky canopy wasn't completely pitch black; through its surface, the intricate formation patterns visible to the naked eye could faintly be seen in the sky above.
The sky defense array of Jingjiang City had been activated, with formation patterns as wide as a zhang flashing white radiance and spreading amidst mysterious lines above the sky.
Yet this layer of black sky canopy enshrouded the entire Xu Residence, preventing the massive array from locking onto its target.
Soon, Xu Yuan's gaze fell on the four figures in the sky.
Ying'er, Zhou Chen, Sizi Yu, and... an illusory remnant.