Space travel is a long and boring process, thankfully, martial artists can cultivate, otherwise, space travel could drive a normal person crazy.
However, the one on Lin Zhen's spaceship was a clone, and whether its strength increased or not was determined by the main body.
His clone was currently at Comet Level 9. To cross the Star Realm hurdle and enter the Constant Realm, Lin Zhen's main body had to break through to the Star Realm, otherwise, it would be almost impossible to achieve a breakthrough.
The only way he could increase his strength was to use Innate Devouring to devour a large amount of Fire-element metals, enhance his body's strength and firepower, promote the growth of Galaxy Beast cells, and gradually evolve towards adulthood.
However, the prices of Fire-element metals were insanely high. Lin Zhen didn't know if his current wealth was enough to afford a single meal, so he could only stay bored on the ship counting stars.