After the two of them finished eating the iced dessert, the heat in their bodies subsided. Zhou Ying took him to the back, then took out pieces of saltpeter to experiment on the spot, "It's best not to eat ice made of saltpeter; you'll have to use this ice to freeze clean water again."
"I understand. This is good stuff. Thank you so much." Manager Liu nodded excitedly.
After that, he looked at the can of saltpeter in her hand with a burning gaze.
Zhou Ying smiled and handed it to him. "This saltpeter can be used repeatedly until it can't make any more ice."
"Thank you. Thank you so much. I'll go back to work then." After saying that, Manager Liu carried the small jar and walked out.
Seeing this, Zhou Ying took out another jar from the warehouse and put it in the kitchen.
