Many explanations can be given for China's accelerated transition to renewable energy sources, and they are all correct (economic, geopolitical - reducing dependence on imported hydrocarbons, local security, scientific and technical, etc.), but another thing is often forgotten - the improvement of the environmental situation in large cities.
The graph shows how much the air quality in Beijing has increased over the past fifteen years. Tracking data from the US Embassy in Beijing, which does not need to be faked.
Such a sharp increase in air quality in Beijing - which was really suffocated in the 2000s and was one of the worst cities in the world for this index - was caused by the closing of coal plants in and around the city, but most importantly - the transition of cars from internal combustion engines to electric vehicles.