If growth slows further, LGFVs won’t be the only ones seeking support. Corporate debt adds another 123 per cent of GDP worth of liabilities, a large chunk of which is owed by state-owned enterprises (SOEs) [2]. In addition, household debt - mostly mortgages - is 61 per cent of GDP. Altogether, China’s gross national debt is over 300 percent of GDP. A high debt burden constrains the government’s fiscal firepower, preventing it from unleashing bolder stimulus and weakening its effectiveness when implementing support measures.

https://www.fidelityinternational.com/editorial/article/how-china-keeps-its-debt-in-order-e1feea-en5/