Chapter 91: Papermaking Ice-Making Method

ded.Yang Lin hurried home and found Li Yuyao."You're just in time."Upon seeing Yang Lin, Li Yunyao took the initiative and said, “Yesterday on Black Wind Mountain, you mentioned the role of saltpeter...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.ld it be that the old emperor only had one son, just like the young emperor That's not right, isn't an emperor supposed to have three palaces and six courtyards, with dozens of concubines How could he...