Yu Xiaocao thought about it and said, “If you want to open an oyster sauce factory, then the shelf life of the oyster sauce will indeed be a problem! It’s alright during the winter since the temperature is low in the north. Thus, there’s no problem with keeping it for several months. However, it will be rather troublesome for the summer!”

In her previous life, what methods were used to extend the shelf life of food? Yu Xiaocao wrinkled her brows and was lost in her thoughts. Although Zhou Zixu was anxious, he refrained himself from disturbing her.

Yu Xiaocao muttered to herself, “The usual method used to extend the shelf life of foods was to store them in low temperature. However, there’s no refrigerator here…”

“Icebox? Is it a box to store ice?” Steward Zhou, who was brought over by Zhou Zixu, couldn’t help asking a question.

“Uh… Yes, a box to store ice.” Yu Xiaocao just realized that she had verbally expressed her inner thoughts, but it was difficult to explain what a ‘refrigerator’ was. Thus, she just agreed with Steward Zhou’s words.

Steward Zhou pondered for a moment and said, “It’s fine to transport goods in the iceboxes during winter. However, the expense will probably be very high in the summer. Besides,...