The most common Korean word for “that way” is 그쪽 (geujjok). There is one more word with a similar meaning — compare them below. 「that way」는 한국어로 그쪽.
that way; there; you
TOPIK 1 · pronoun
that side
TOPIK 1 · pronoun
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato