This Element explores the changing landscape of eBook businesses and cultures in China in the past two decades and examines how disruptive innovation and the platform economy have transformed one of the world's largest book markets. Through an evolutionary perspective, this Element documents and analyses the emergence, growth, and refinement of disruptive models in three areas of trade publishing, including free eBook developments, digital self-publishing, and platformed social reading. It offers a critical account of the complex interplay between emerging technologies, business innovations, and book cultures and conceptualises China's eBook evolution as both a part of global digital publishing transformation in the platform age and an embodiment of local dynamics in a transitional society. This Element is essential for scholars, students, publishers, and the interested publics to understand China's digital publishing innovations and their global implications.