Booooom!
It was a thundery shower. The dark sky was repeatedly torn apart by streaks and streaks of glaring lightning. Rain was pouring down in torrents.
The curtain of rain was limiting everyone's field of vision, which in turn reduced their shooting accuracy. The mercenaries had to cover the weapons and equipment with waterproof covers against the violent storm as they were not waterproof, and they also sent their ammunition reserves to sheltered areas.
Heavy rain flooded the entire world, and its sound filled everyone's ears. The fortresses were saturated with moisture. Han Xiao placed himself far away from the window to avoid getting soaked. He looked at the weather outside and frowned. Terrible weather like that is clearly generated by the system purposefully. I bet the next wave of heavy attack will come at this time, otherwise…