A lot of people need invoices these days, real car invoices.
1, he is on a business trip by a friend, but think of the unit reimbursement, the unit requires the same day ticket, so he needs your bus ticket.
2, many companies do accounts, need to consume invoices, including gasoline tickets, tickets, and daily purchase of office items tickets, the more tickets consumed, the need to pay relatively less tax to the state. So they need your bus ticket, train ticket or even plane ticket for financial accounting.
3, the end of the year, many units have to the end of the reimbursement time, the unit has a lot of spare money, but can not take out. You need an invoice to pay it off before you can cash out. That is, at the end of the year the unit has 50,000 spare money idea bonus. But now we're cracking down on them. So from the outside to get a large number of bus tickets train tickets and other bills offset to financial reimbursement, in order to set up a gold.