POSCAR for generated by WannierTools
1.0
    3.000000    0.000000    0.000000
    0.000000    3.000000    0.000000
    0.000000    0.000000    3.000000
X     Y     
     1     1
Direct
    0.000000    0.000000    0.000000        X
    0.500000    0.500000    0.500000        Y
