A good paste would produce a clear impression in one go; if the impression is not clear requiring further impressions then it indicates that the paste is either too dry or the cinnabar has been depleted. When the seal is pressed onto the printing surface, the procedure differs according to plant or silk based paste. For silk based paste, the user applies pressure, often with a specially made soft, flat surface beneath the paper. For plant based paste, the user simply applies light pressure. As lifting the seal vertically away from its imprint may rip or damage paper, the seal is usually lifted off one side at a time, as if bent off from the page. After this, the image may be blotted with a piece of paper to make it dry faster, although this may smudge it. Usually there needs to be a pile of soft felt or paper under the paper to be imprinted for a clear seal impression. Usage across East Asia Chinese usage Many people in China possess a personal name seal. Artists, scholars, collectors and intellectuals may possess a full set of name seals, leisure seals, and studio seals. A well-made seal made from semi-precious stones can cost between 400 and 4000 yuan (about 60 to 600 United States dollars in 2021). Seals are still used for official purposes in a number of contexts. When collecting parcels or registered post, the name seal serves as an identification, akin to a signature. In banks, traditionally the method of identification was also by a seal. Seals remain the customary form of identification on cheques in mainland China and Taiwan. Today, personal identification is often by a hand signature accompanied by a seal imprint. Seals can serve as identification with signatures because they are more difficult to forge than a signature, and only the owner has access to his own seal. Seals are also often used on Chinese calligraphy works and Chinese paintings, usually imprinted in such works in the order (from top to bottom) of name seal, leisure seal(s), then studio seal. Owners or collectors of paintings or books will often add their own studio seals to pieces they have collected. This practice is an act of appreciation towards the work. Some artworks have had not only seals but inscriptions of the owner on them; for example, the Qianlong Emperor had as many as 20 different seals