Chapter 91: Papermaking Ice-Making Method

d, I think it's also a trick!"First, we're in the business of selling tofu and medicinal herbs. Now that there are more merchants coming to the village, even though you say it's taking from the people...It is now the middle of the month.

The night was deep, a round moon hung high in the sky.

Inside the Yang family home, everyone sat together, watching Xiao Jiu calculate.ered that the most reasonable ratio of potassium nitrate, sulfur, and carbon was 75% to 10% to 15%!As long as you follow this ratio and experiment a few times, it's not a problem to create gunpowder!W...