A London-based Korean artist penned an open letter to 218,000 employees at Hyundai Motor Group, inviting them to participate in an exhibition, which will be part of a permanent display at HMG’s human resources development center. The journey of the work began as the employees accepted the artist’s invitation and submitted their photographs. Those collected portraits were assembled on a video wall. At a distance, these photographs appear as tiny dots. Participants only can see their …