A visitor talks with a staff member at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019. BookExpo America, one of the largest in North America, runs from Wednesday to Friday this year at the Jacob K. Javits Convention Center. Organizers said the expo has attracted some 500 US and international exhibitors this year. (Photos； Xinhua)

Visitors look at books at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.

Visitors look at books at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.

Visitors queue for new books at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.

Visitors read books at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.

A visitor looks at brochures of book introduction at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.

A visitor looks at books at a booth during the 2019 BookExpo America in New York, the United States, May 29, 2019.