Carrie Lam Cheng Yuet-ngor (right), chief executive of the Hong Kong Special Administrative Region, visits a booth displaying Yixing purple clay on April 20 at the Jiangsu cultural event at Hong Kong's Victoria Park. Ji Yishun (R2), a master of Yixing purple clay, introduces his series of works, entitled "Four Beauties", and the process of making a purple clay teapot to the chief executive of Hong Kong. [Photo/ jsyxzsc.com]