Traveling Through the Ming Dynasty, I Am Zhu Biao's Godfather

IQ is online, single female protagonist, the protagonist has no system Will you become invincible after traveling through time? I am a helpless college student who has nothing to do with the Special Forces Time Travel Belt System. If I and two others are forced to fight, it will cost my life. Fortunately, I have a big brother who is responsible for eating and drinking, shouting "come on" to the big brother and taking me to take off. People can't make airplanes or cannons through time travel, but I can only make small inventions. Who knew that the person I was fighting with later was a loser?