The Most Powerful Inventor of the Tang Dynasty

Traveling back to the Zhenguan year of the Tang Dynasty, he became the fourth ovary of Prime Minister Fang Xuanling. With the inventor system on his body, he became the great inventor who made all the difference in the Tang Dynasty. Horseshoes, ice making, muskets, cannons... Etc., Whatever you want is available. Li Er: Yiyi, I think our map of Datang is a bit small. Can you help me expand it several times? Queen Changsun: This ice cream drink is sweet and has a smooth texture. It's so delicious! Princess: The sworn son is the greatest literary figure in the Tang Dynasty, we want him to be our consort! Fang Yiyi said he was very helpless. Isn't this all trivial? There is nothing worth making a fuss about! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.