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Letter bookmark is a bookmark that can be accurate in words to record the reading position.
After reading,you only need move the arrow to the reading position,next time you can read under the guidance of the arrow.
Readers can directly find the last specific reading location using letter bookmark to avoid the interference of people's reading enthusiasm by finding specific reading position, make people's reading process more smoothly, and improve people's reading concentration.
Hangzhou CIty, China