A gas bill with an over-reimbursement of 50 yuan, an abnormal electricity bill, a 2-second delay in the budget system... Auditor Shen Lu, who was assigned to the northwest base, peeled off top-secret hidden traces spanning ten years from the most inconspicuous accounting flaws. When everyone said that he did not understand the overall situation, he only believed in one sentence: Accounts, and he would not lie.