Yang Jian had obtained a great deal of useful information from the man called Old Li. It was crucial information that gave him a general understanding of the Ghost Post Office's fifth floor.
From Old Li, he learned that the fifth-floor messengers had stopped delivering letters a long time ago. Because the black letter had been left in Room 502, the post office could no longer function normally, allowing the former fifth-floor messengers to live safely.
Some of the messengers who had previously come up from the fourth floor had thus gained a brief period of freedom. Others, like Yang Jian, had chosen to enter Room 502 and attempt to take away the black letter so the post office could return to normal. Unfortunately, all of those people had failed.
The prolonged stalemate had also made Old Li realize the severity of the problem.
The post office was losing control.
The dangers caused by that loss of control were even more terrifying, so Old Li had been waiting for a messenger capable of handling the black letter.
Yang Jian's appearance was not a coincidence. He had the strength to deal with the supernatural phenomenon in Room 502.
Simply put, he was powerful enough.
The previous messengers might have had luck, intelligence, and ability, but they had lacked strength. In the end, they could only die here in regret.
"By the way, do you know a woman called Yin Zi?" Yang Jian suddenly asked.
"There was such a person. She also entered Room 502. I remember her very clearly." Old Li fell silent for a moment, seemingly recalling events from the past.
Yang Jian looked at the broken corpses scattered across the floor. "Did she die?"
The woman who went by the alias Yin Zi was a captain-level figure designated by