The Mathematical Bridge, also known as Newton Bridge, is a wooden bridge in Queen's College. Legend has it that Newton used mathematical and mechanical principles to design and build the bridge without using a nail, which can be called a miracle. Newton's students believe that students can do what teachers can do. So they took the bridge apart, but they couldn't restore it without nails to the original building of Mr. Newton. Finally, they had to use nails to rebuild the wooden bridge. No one can prove the truth of this statement, but there are two things to be sure: the curiosity of Cambridge students, the courage to challenge authority and the courage to practice; there must be nails in today's mathematics bridge.