I am Liyi Li, a PhD student at the University of Illinois at Urbana-Champaign. I will work at the University of Maryland as a PostDoc this fall. My research area is Programming Language, Formal Methods, Compilers and Software Engineering. I am especially interested in verifying compilers. I like to fully verify a compiler in real-world, such as the compiler from Haskell to LLVM. My plan is to define the semantics of the source and target languages, as well as each step in a compiler, and then verify that the compiler step preserves the language meaning after the translation.