As a junior at Kyungsung University in Busan, Han was named KBA Best Collegiate Hitter, batting .348 (32-for 92) with 23 RBI and 3 home runs in the 2010 season.
He hit a single off Eliecer Navarro of Panama in Round 2 but struggled at the plate during the tourney, going 1-for-9.
However, Han was called up to the Wyvern's 26-man first team roster in May which was the earliest first league promotion amongst the rookie position players of the 2012 season.
In July Han came back to the first team and played in six games going 2 for 6 with one run as a pinch hitter.
However, Han was placed on the disabled list on July 27 due to a sprained ligament in finger after sliding headfirst at first base, and spent the rest of his season in the second team.