Traveling Through the Tang Dynasty for Eighteen Years, the Result Is Journey to the West?

Traveling through the Tang Dynasty, Fang Yiai, the son of Fang Xuanling, thought it was an ordinary ancient world, so he tried his best to change the life of the original owner, develop technology, and want to create an eternal Tang Dynasty... As a result, he invented pen, ink, paper and inkstone, planted sweet potatoes and potatoes, researched hybrid rice, and increased the national power of the Tang Dynasty dozens of times. Finally, when he turned 18, he was awarded the title of First Grade Minister of the Ministry of Industry and was revered as a contemporary saint... A monk stepped into Chang'an to avenge his mother, and his name was Chen Xuanzang!