deletions | additions       diff --git a/We_can_see_from_Fig__.tex b/We_can_see_from_Fig__.tex  index e6494db..bc1831c 100644  --- a/We_can_see_from_Fig__.tex  +++ b/We_can_see_from_Fig__.tex 
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We can see from Fig.6 that the edge states are very close to the zero energy point. The winding number is invariant under adiabatically deformation of Hamiltonian. There are two ways to change the winding number. First one is to pull the circle at