Funding for this research was provided by:
The Conservation Science and Technology Project of Zhejiang Provincial Administration of Cultural Heritage (2017)
Text and Data Mining valid from 2019-07-02
Received: 29 December 2018
Accepted: 25 June 2019
First Online: 2 July 2019
Ethics approval and consent to participate
: This article does not contain any studies with human participants or animals performed by any of the authors.
: The consent for the publication of details and images in the manuscript are obtained from all participants.
: The authors declare that they have no competing interests.