It was indeed the Pill Compression Art that Elder Sang had passed down to Xu Xiaoshou.
From the looks of things, it would seem that Elder Sang was cooking his two opponents in the Dragon Melting Realm like he would when preparing a concoction of his medicines.
There were gasps heard from around Xu Xiaoshou. It was apparent that the Sovereign Stage masters were shocked Elder Sang would employ such a method.
Xu Xiaoshou had a closer look at the compressed scorching white fireballs and noticed the temperatures had spiked several times.
Xu Xiaoshou wondered if the masked man and Cen Qiaofu could still survive within them.
One fireball shook violently as soon as the thought occurred to Xu Xiaoshou, and a strange icy cold aura immediately emanated from it.
Everyone seemed shocked that an icy cold aura could still emit under such a high temperature in the fireball.
The Epitaph of City Snow!