Desolate Era: Hatching a Phoenix at the Beginning

Suddenly, a huge earthquake occurred all around the globe, throwing everyone into a desolate world.
The humans of the new world were primitive. They lived their lives facing all sorts of dangers every day, from hurricanes to attacks from huge beasts.
The humans that were brought to this world all received a totem and an egg.
Placing the totem on a certain land would turn the place into the person’s new tribe. Everyone could expand their tribes according to their strengths.
The eggs contained various beasts that would grow into humans’ most loyal companions. Humans would have to struggle to live in the desolate world with their companions and protect their own lands.
Just as Ye Chen was about to hatch his egg, he noticed he could read hidden hints.
[Monster Egg: Place a drop of blood to hatch.]
[Hidden Hint: Hatching the egg now will reward you with a Rank E Mutated Beast, Spiny Turtle.]
[Hidden Hint: Hatching the egg in 1 minute will reward you with a Rank D Mutated Beast, Dangkang.]
…
[Monster Egg: Place a drop of blood to hatch.]
[Hidden Hint: Hatching the egg now will reward you with a Rank E Mutated Beast, Yellow Horse.]
[Hidden Hint: Hatching the egg in 30 seconds will reward you with a Rank C Mutated Beast, Tiger Fish.]
[Hidden Hint: Hatching the egg in 60 seconds will reward you with a Rank SSSSS Mutated Beast, Immortal Phoenix.]
…
A few years had passed since then. Ye Chen led a group of Rank SSSSS Mutated Beasts and said confidently, “My success is the result of my hard work!”