Soon it will be time for brother and sister to be re united.

Not too soon, he probably has like 3 more roadblocks/challenges to overcome smh.

It won't be too long. Their reunion is not the end of the story, but the beginning. Plus getting her out of Purgatory Mountain will be a HUGE task, based on the reason she was sent there in the 1st place. You may also remember the poison flute for controlling demon-beasts in the last episode? What does he need to complete the divine artifact? A girl with a "Pure Yin Body"

Not too soon... Mc need to kill Cui Xie first because there's a reason why his sister locked at Purgatory Mountain... To do that mc need to up his cultivation to Limbo Realm (War Saint) and that's 5 level above his level of cultivation right now...

XD