The First Scientist in the Qin Dynasty

By chance, as a well-known scientist in China, I traveled back to Daqin. Who am I? Where am I? All kinds of questions appeared in my mind. How should I survive in this era? How can I use my scientific knowledge to change this era? How can this era change a modern scientist? Please appreciate Daqin's number one scientist. I will insist on updating every day. Thank you for your support. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.