Yang Yi felt he must rest for a while, otherwise he wouldn't be able to face the dangerous environment ahead in his best state.
He had been tense for several days, experienced continuous long-haul flights, and Yang Yi was no iron man. His mind and body were both extremely fatigued, and Anton was equally exhausted, possibly even more so than Yang Yi.
He took out two pre-prepared phones from the safe house, inserted the SIM cards, charged them, then placed the weapon beside the pillow. Yang Yi quickly fell asleep.
Five hours of sleep was not enough for a full recovery, but with Yang Yi's physical condition, five hours were sufficient to alleviate his fatigue, allowing him to meet the coming challenges in near-optimal condition.
How important is a good state?
To give a simple example, if Yang Yi were too sleepy to keep his eyes open, he might not notice the unusual look of an oncoming pedestrian, and that person with the unusual look might be about to pull out a gun on him.