In a closed prison, everything around was unfamiliar, but suddenly someone became interested in him. This situation made Luo Zheng alert yet filled with a touch of anticipation. The information implied by "Yellow Race" was too insufficient to make any judgment. After pondering for a while, he returned to his training. The narrow cell was fitted with a sandbag as tall as a man, which made the already limited space even smaller. The sandbag was installed the day after he requested it; the police cooperated. Luo Zheng didn't want to challenge the limits of the police too much and invite deadly trouble. Everything had a measure, and it was wise to stop while ahead.