yes. Generally, only a few people will issue invoices when they eat in restaurants, so the tax bureau will directly check the column of income without tickets in the financial statements when it sees that they are catering. If it is written as 1 or only a little, it is likely that two sets of accounts have been made, and there is hidden income. The business vouchers issued and collected are the original basis of accounting and an important basis for law enforcement inspection by audit institutions and tax authorities.