China's population decline and fewer working age people is likely to reduce the high capital accumulation that sustained rapid growth in the past. China's dependency ratio- population of children and elderly relative to the 15 to 64 year old age group went up to 46% in 2021 from 34% in 2010, says WSJ. This means less savings accumulation, and less of the enormous pool of cheap capital of the last 2 decades that led to fast growth. That period is ending. This makes the subsidy based approach to push key industries such as chips and solar panels in the past much more difficult in the future, says Nathaniel Taplin in the WSJ.