Under Chinese accounting standards (which, in PetroChina's case, have usually given results close to IFRS), for the first nine months of 2021, PetroChina is reporting about $35 billion of net cash flows from operating activities and about $26.6 billion of capital expenditures. On an annualized basis, that means PetroChina is on track to earn about $11.2 billion in free cash flow this year.