A book has a section called "sharing free collar" according to the query of the palm reading app, and one book is limited every day. Books obtained by the above method can lead to one book a day. Palm Reading App is a digital reading platform developed by Palm Reading Technology Co., Ltd., with about 500,000 digital reading contents, covering serious publications, original literature, audio books and comic magazines. The coverage rate of high-quality and heavy-weight published books is at the leading level in the industry.