Reducing coal consumption is crucial for China's sustainable development. To achieve this goal, the Chinese government has implemented various policies aimed at promoting a transition to clean energy, such as the "coal to gas" and "coal to electricity" initiatives. In this particular episode, Lydia Qui, an alumna of the MSc PIE program and currently a Risk analyst at TikTok, focuses on the metropolitan region of Jing-Jin-Ji. She analyses the impact of the "coal to gas" and "coal to electricity" policies on the winter heating sector, a significant source of greenhouse gas emissions. During their conversation, Onya and Lydia discuss the key characteristics, impacts, limitations, and differences between these policies. They also delve into the consequences of implementing these policies for the residents of Jing-Jin-Ji, as well as the implications of Lydia's findings for policymakers and corporations.