3 Zn0 + Na2SIVO3 + 8 HCl 3 ZnIICl2 + H2S-II + 2 NaCl + 3 H2O

This is an acid-base reaction (neutralization): Na2SO3 is a base, HCl is an acid.

This is an oxidation-reduction (redox) reaction:

SIV + 6 e- S-II (reduction)

3 Zn0 - 6 e- 3 ZnII (oxidation)

Change the oxidation states