A copy. According to China Education Online, Ji Liang University in China is a batch of undergraduate courses in China, so it is a book. Ji Liang University in China is the only undergraduate college named after metrology in the world. Located in Hangzhou, Zhejiang Province, it is a key university jointly established by the State Administration of Market Supervision, Zhejiang Provincial People's Government, Zhejiang Provincial Department of Education and Yiwu Municipal People's Government.