Night Talk in a Boat

My name is Lin Yuanzhou. I host a live broadcast to explain movies after get off work. It's purely for entertainment. There is a group of people in the barrage, claiming to be Qin Shihuang, Liu Bang, Li Shimin, and Zhu Yuanzhang. Ask me every day: God, why can this iron bird fly? How to mass produce firearms? How to fight street fighting? I thought they were COSER and they answered seriously. The water friends laughed at me for being too involved in the drama, and I also laughed at them for being too involved in the drama. Until one day, I discovered that there were a few pages in the history book that I had not seen before. Another day, someone asked in the barrage: God, the time machine is built, can we really come to see you? I casually said: OK, I will believe it when it comes. Then the sky opened.