Attribution 4.0 International (CC BY 4.0)
You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
Marbel arch at Kew-yung Jwan, Nankow Pass, Penchili province, China, built during the Yuen dynasty (c. 1345 AD). Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.