It was already late at night. The difference in temperature between day and night in the rain shadow was huge. It was scorching hot during the day, while chilly winds blew at night.
Xiao Yu had a coat on, snuggling at Xia Fei legs while sleeping soundly. Even though Xia Fei was also exhausted, he needed to persevere. As long as he was still in danger, he could not drop his guard.
He took out a bottle of pills from his spatial ring and poured out two on his palm before washing it down with a gulp of mineral water. A few minutes later, Xia Fei's eyes turned bright again, as if he were a wild beast searching for prey in the night, shining with his vigilant eyes.
This drug was called Edge, and people could maintain a high state of vigilance under its effects, not feeling tired at all.