Passage: In 1938, Lee Byung-chul (1910–1987) of a large landowning family in the Uiryeong county moved to nearby Daegu city and founded Samsung Sanghoe (삼성상회, 三星商會). Samsung started out as a small trading company with forty employees located in Su-dong (now Ingyo-dong). It dealt in dried-fish, locally-grown groceries and noodles. The company prospered and Lee moved its head office to Seoul in 1947. When the Korean War broke out, he was forced to leave Seoul. He started a sugar refinery in Busan named Cheil Jedang. In 1954, Lee founded Cheil Mojik and built the plant in Chimsan-dong, Daegu. It was the largest woollen mill ever in the country.Samsung diversified into many different areas. Lee sought to establish Samsung as leader in a wide range of industries. Samsung moved into lines of business such as insurance, securities and retail.

Question: What year did Lee relocate to Seoul?
1947