Sui and Tang Dynasties: I, Li Er, Am a Land God Who Catches Time Travellers.

A middle school student traveled through time and became Li Shimin. As time went by, more and more lickers were around him. He discovered that some of the lickers were actually time travellers! A: Your Majesty, I invented horseshoes, which can enhance the endurance of war horses. Li Er: I knew about this earlier. You are responsible for inventing the steam engine within half a year. If you fail to do so, you will be dismissed and investigated! B: I invented gunpowder, which can increase the combat effectiveness of our army! Li Er: "I already know the formula. You are responsible for making the artillery within nine months! If it exceeds the deadline, it will be sent to the border guards." C: The locust plague is coming. I offer sweet potatoes, a high-yielding crop, to help the people survive the famine. I just ask your Majesty to marry the princess to a minor minister. Li Er: Wishful thinking! I not only have sweet potatoes, but also potatoes. You are responsible for developing hybrid rice within one year. If you fail to do so, you will be sent to the outside world! ... Civil and military officials: Your Majesty is truly a god! Li Er smiled mysteriously: It's a showdown, I have already seen through everything! Someone come! Catch these time-travelers! Your Majesty, there is a way to kill the immortals! Li Er: Close the door and let the lick* go! Who should be released first? Kou Zhong and Xu Ziling! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.