Ye Chong did not expect the chase to last for 24 days.
Had it not been for Mu, Han Jia's holographic scanning system would not have been enough for him to keep up with the red-tailed beast. On the ninth day, he began to consider end the pursuit and return to base. Inside the Calamitous Asteroid Belt, numerous rocks and planetary bodies of sizes were everywhere. It was easy to lose one's way, and even Mu could not guarantee identifying their location.
However, Ye Chong decided to continue his pursuit for a very specific reason.
Once they entered the Calamitous Asteroid Belt, Ye Chong deployed Mu immediately. With that, they quickly verified that the red-tailed beast was immune to pure energy attacks. Perhaps it was not immune to all kinds of energy based weapons, but Mu's Recursion rifle was at least ineffective against it.