The cinema of mainland China is a global powerhouse, home to the world's largest film studios like Oriental Movie Metropolis and Hengdian World Studios, and became the second-largest box office market globally by 2012, reaching US$6.58 billion in 2016. Its rich history began with the introduction of motion pictures in 1896, leading to the first Chinese film, Dingjun Mountain, made in Beijing in 1905. The industry operates under strict government oversight, highlighted by a 2016 film law banning content harmful to national interests and promoting core socialist values. This influence also shapes the "main melody" (zhǔxuánlǜ) genre, state-subsidized films designed to "invigorate national spirit and pride," often depicting historical events or Chinese Communist Party leaders. These popular films, such as The Founding of a Republic (2009), strategically incorporate Hollywood-style effects and "red songs" to engage audiences while promoting nationalistic messages.