What are the contents of the calligraphy inscription to be invoiced?

The contents of the calligraphy inscription invoice are: calligraphy XXxx, Chinese painting xxxx or oil painting xxxx, or calligraphy and painting xxxx, totaling xx pieces, and the cost is xx. The purchase of calligraphy inscriptions belongs to the purchase of office supplies, and the purchase information of office supplies must truly reflect the actual situation. The billing information of office supplies must be true, such as type, quantity, amount and other information.