Ju Hak-nyeon (주학년; born March 9, 1999) is a South Korean-Hong Kong singer-songwriter and actor under One Hundred Label. He is a member of the boy group THE BOYZ. Ju Hak-nyeon (주학년; born March 9, 1999) is a South Korean-Hong Kong singer-songwriter and actor under One Hundred Label. He is a member of the boy group THE BOYZ.