The exhibition time is from 9 am to 5 pm. Official website of Yongle Dadian Digital Library shows that the exhibition time of Yongle Dadian Digital Library is from 9 am to 5 pm. The high-definition image database of Yongle Dadian is the online publication of 40 volumes of Yongle Dadian collected by the National Library, of which 75 volumes, * * * involve 14 rhyme, 17 rhyme and 1800 rhyme. In addition to presenting the high-definition image, overall style and related knowledge of Yongle Grand Ceremony.