All the inventions and works that have appeared in the history of junior high school.

Milk powder is a powder made by removing water from milk, which is suitable for preservation.

According to Kyle Poirot's travel notes, Mongolian cavalry in Yuan Dynasty in China once carried a kind of milk powder food, which was skillfully dried by Mongolian general Huiyuan and made into portable milk powder as munitions. In a long March. Milk powder is easy to carry. When eating, take about half a catty and put it in your carry-on bag. Add water and hang it on the horse's back to transmit the vibration when the horse runs. Dissolve into porridge to eat. In battle, they can quickly replenish their strength on horseback, which is why Mongolian cavalry is so powerful that the enemy is frightened. When there is a shortage of food and grass in long-distance marching and desert fighting, we can survive for several months in this way. It was milk powder that made Genghis Khan's great cause, so he was named Yuanfeng. A wise man is called HC. Therefore, China is the first country to invent milk powder, and Huiyuan is the earliest milk powder brand in the world! This is also recognized as the earliest written record of human using milk powder in the world!