Read it years ago wanting to re read it
All I remember is as follows
MC and others able to travel to another realm to gain strength MC trained eventually going onto next level of realm
Eventually he is spat out of some long necked dinosaur thing MC is also on back of an even more massive tortoise it is fighting another tortoise in an ocean of lava
MC at some point travels to a massive dying tree a new area for him MC kills the 3 massive creatures draining the life of the tree bringing it back to life one of which is a snake
Cultivation novel