Enough to get a start, then he just kept stumbling into a series of opportunities to get more followers over and over. Also helped that the Qin dynasty was dealing with like 6 simultaneous rebellions from a previous war of expansion. Liu was in the right place at the right time and was such a massive improvement over the dickheads ruling most places under the Qin he just kept advancing.
Enough to get a start, then he just kept stumbling into a series of opportunities to get more followers over and over. Also helped that the Qin dynasty was dealing with like 6 simultaneous rebellions from a previous war of expansion. Liu was in the right place at the right time and was such a massive improvement over the dickheads ruling most places under the Qin he just kept advancing.