In the wave of digitalization driven by rapid advancements in information technology, the digital transformation of governance methods has become a leading trend in government reform. Constructing a transparent, open government, illuminated by sunlight, is an important approach to achieving digital transformation and reshaping the relationship between government and citizens. This paper starts with the era's backdrop of digital government construction and, based on Chinese Social Survey, systematically discusses the systemic impact of government information disclosure on citizen opinion expression. The research finds that government transparency significantly enhances the activeness of citizen opinion expression, and this effect varies with the degree of digital transformation at the local level. Analysis of the mediating effects reveals that government responsiveness and societal fairness perceptions are crucial mechanisms explaining the relationship between the two. This study enriches the process perspective of the "government-citizen" relationship to a certain extent. Constructing a people-centered, open government will likely become a future trend in digital transformation.

"> Digital Government, Government Information Disclosure, Citizen , Opinion Expression, Government Responsiveness, Perception of Social Fairness