When war broke out in 1937 between Japan and China, Liu was overwhelmed with patriotic fervor, and returned resolutely to his motherland, where he served as an assistant instructor in the electrical engineering department at Zhongshan University in Guangzhou.
一九三七年中日戰爭爆發，在澎湃的國家意識之下，劉其偉毅然回到祖國，擔任廣州中山大學電工系助教。