This is not difficult. 1 Store received cards from two stores. 1 Store made a loan when bookkeeping: Store A/R -2, loan: sales revenue; Store 2 receives the card from store 1. Store 2 bookkeeping, debit: accounts receivable-store 1, credit: sales revenue. It is also possible to conduct internal transactions between the two stores, that is, treat each other's cards as white bars.