PetroChina Xinjiang Oilfield Company comprehensively promoted the special action to improve quality and efficiency.Through the in-depth interpretation of the balance sheet,income statement,cash flow statement,we deepened the analysis of the investment and cost structure,collated the corresponding relationship between financial data and key indicators in these sheets,and defined the directions of control one by one.We implemented 31 measures for investment control in six categories,realising overall investment control and cost reduction of RMB 8.8 billion(including investment control of RMB 5.14 billion and cost reduction of RMB 3.66 billion).