FILE- People walk past a Lotte Mart where additional security measures are visible in Beijing, China, Friday, March 17, 2017. Bilateral relations between South Korea and China took a significant hit in 2017 after South Korea installed an advanced U.S. missile defense system to counter nuclear and missile threats from North Korea. Beijing retaliated by suspending Chinese group tours to South Korea and obliterating the China business of South Korean supermarket giant Lotte, which had provided land for the missile system. (AP Photo/Ng Han Guan, File)