Although Tongcao paintings were produced in Guangzhou, almost all of the handed down works are abroad. At present, Tongcao paper watercolor paintings are mainly collected in Western museums. According to an article written by Ivan Williams, there are at least a dozen institutions in the UK with considerable collections of papyrus paintings, including the British Library, the Leiden Folk Museum in the Netherlands, the Bodleian Library of Oxford University, and the Cecil Gallery. , the Fitzwilliam Museum in Cambridge, the Peabody Essex Museum in the United States, the Folk Museum of Madrid, etc. are products of a specific history and have high historical, cultural, and artistic research value. I believe that as more and more people understand and recognize this unique painting. Traditional crafts from a hundred years ago will also be revived and brought to the world again.