Luo Cheng realized it quickly, but his first reaction was to look around and sense what was going on.
After confirming that only the three of them had seen this scene, Luo Cheng heaved a sigh of relief.
"Ziyang, go and guard the area nearby. Don't let anyone get close!"
Luo Ziyang also knew the importance of this matter. He nodded and walked out of the kitchen to guard outside.
"Xiaoran, remember what I said today! Don't tell anyone that you know how to make ice with saltpeter in the future. Even if someone asks, you can't say a word!" Luo Cheng said with a serious expression.
"Just because saltpeter can make ice?" Li Xiaoran understood something.
