Group Wanna One left the country via the Incheon International Airport to attend the 2018 KCON (Kacon) LA in United States of America LA on the afternoon of the 10th.
About Lai Kuan-lin
Lai Kuan-lin, also romanized as Lai Guanlin and better known mononymously as Guanlin, is a Taiwanese rapper, singer and actor based in South Korea and China.
 Wikipedia