Finished the whole novel.
It was quite enjoyable until the last arc with Western Region.
Very rushed. The ending was anti-climatic. The revelations were whatever, no shock. Did the author get bored and just wanted to finish it asap? A shame, in the earlier chapters he wanted to write something of quality.
And it's a shame they haven't crossed the world with other mortal or immortal worlds.
Due to the last ~20 chapters I can only lower the rating.
If you're looking for a similiar novel, check out Invincible Uncle-Grandmaster. This one has better ending.