Shang had seen the person before the person had seen him.
They weren't traveling at their full speed, and maybe, Shang could escape before they saw him.
However, Shang just smirked and chuckled a bit.
'How interesting,' he thought. 'It seems like Gregorio hasn't been the most careful.'
A moment later, the person found Shang, and they just watched with shock.
This confirmed that they hadn't known that Shang was still alive but that they had only had a hunch.
Shang could feel the person looking at him, and the person could also feel Shang looking at them.
A moment later, a portal opened just 100,000 kilometers behind Shang. It wasn't close enough to count as melee range for Shang, but easily close enough for a Peak Mage King to fight him.
A moment later, an older man with an immaculately groomed suit walked out.
The Custodian, Wester.