Core Viewpoint - The company, Wento Holdings (600715), primarily generates its overseas revenue from its game publishing business, with significant contributions from countries like Vietnam and South Korea, while not engaging in the European market [1] Group 1 - The company's overseas operating income is mainly derived from the game overseas publishing business [1] - Current revenue sources for the game publishing business include Vietnam and South Korea [1] - The company does not have operations in European countries [1]