Manager Chen had specifically studied this lamp post and discovered that it was hollow inside, containing nothing. Behind the lamp post, there was an inconspicuous rune. Manager Chen had unintentionally touched it once, and afterwards, a crack surprisingly appeared on the lamp post, which allowed entrance into its interior. From the outside, the lamp post seemed small, but once inside, one would realize that the space was rather spacious, and lying down to sleep would pose no problem at all. What was more important was that Manager Chen also found that while hidden inside the lamp post, he could peek at the outside activity, and yet people outside could not locate him using Divine Sense.
Clearly, this lamp post was an extraordinary magical artifact. Perhaps Manager Chen would have taken the lamp post with him when he first discovered it, had he not found it to be of little use and somewhat ominous.