Tropical geometry can be view as a piecewise linear shadow of algebraic geometry. 
Most of the time, we can drive statements about algebraic varieties by means of 
their tropicalizations. One general difficulty in this philosophy is that the 
tropicalization strongly depends on the embedding of the algebraic variety. 
Therefore, the task of finding a good embedding or repairing a bad embedding to 
obtain a nicer tropicalization is an interesting and essential work for many of 
researchers in this area. In this talk, I will explain the concept of modification 
firstly and then some results with the help of examples, which allows us to repair 
bad embeddings under certain conditions.