Yan Gu had been waiting in the City of Heaven's Roars for over a month. He was restless with anxiety.
Lu Li had been gone for over a month. Yan Gu speculated that Lu Li had gone to the Inferno, but there was nothing he could do. He could not break down spatial barriers and go to the Deserted World where he could achieve nothing. It was not like he could go to the Inferno to capture Lu Li's families or friends.
The powerful warriors from the nine universes and some others from the Prison of Primordial Chaos spent years to break down a dozen spatial barriers to arrive at the Heaven Reverse Universe.
The Yan Family paid the price to get the Wicked Bead. They paid others in a large number of Divine Sources. Even with Yan Tiangang, the Divine Sources could not come easily. Yan Tiangang had to bear the cost to send things back to the Yan Family.