He [Imam Mahdi (hgr)] is present and can be achievable [if we regard morals]…
[Imagine] A vice city, with the demons of Jinn and human … all put their effort not to let you get to the destination!
Suppose an individual has invited some people to his/her home.
He also provided special reception and excellent food for them.
Although he has given the home address, he knows there are some fraudulences along the way.