Attendees watch the performance of Sichuan Opera face-changing at an event promoting southwest China's city of Chengdu in the southern U.S. city of Austin, March 8, 2019. China's Chengdu City held a promoting event on Friday on the sidelines of the 10-day South by Southwest (SXSW) Conference and Festivals to introduce the city and seek cooperation opportunities. (Xinhua/Wang Ying)