From the Wikipedia page [1] (now part of the page on Taiwanese Tea Culture)

Wu-Wo Tea Ceremony 無我茶會, also known as Wu-Wo Tea Convention and Wuwo Tea Party. It is a style of Chinese tea ceremony that encourages participants to forget about knowledge, wealth, and appearance to establish a group equality without prejudice. This concept of Wu-Wo is shown in the Wu-Wo Tea Ceremony.