"There are two paths you can take inside the Dark Train. One, you can be a permanent passenger of this train. And two, you can be a 'challenger'." The panda explained the important details without further ado.
The two paths were necessary for the passengers as it would direct towards the future they chose. Being a 'resident' of this train had many benefits, including the protection rights and a bit loose constraints. While being the 'challenger' would be hard. Not to mention the loss of exclusive protection rights, the constraints of the train would also bind you. Meaning, you couldn't exert much power you used to do.
The challenger path was for those who seek to get out of the Dark Train.
"So that's it. You may now choose what you want to take." The panda was still grinning as if he was expecting something interesting.
"Being a resident, how many constraint chains are unbinded?" Jin Rou asked.