Regardless of whether the disaster was natural or manmade, the main point was that the lethal explosions had given Liu Zilang and Misaka Mikoto a ray of hope in surviving past the circle.
Among the three firebases that had attacked them earlier, Long Shenjue was the one who had been outright killed.
SSR had been knocked out, and his teammate was most likely reviving him at that moment. Only Karl and his teammate were left targeting Liu Zilang and Misaka Mikoto.
The weapon slung on Liu Zilang's back was an SKS that had been looted from Li Muqiu.
The two people were safe from Heavenly Fire as they were positioned in a building. That was why they were so brash in attacking them.
The seemingly perilous moment was the perfect opportunity for Liu Zilang and Misaka Mikoto to break out of their predicament.