SAN FRANCISCO, Jan. 8, 2018 (Xinhua) -- People enter the Asian Art Museum on Free Sunday in San Francisco, the United States, Jan. 7, 2018. (Xinhua/Wu Xiaoling/IANS)moreSAN FRANCISCO, Jan. 8, 2018 (Xinhua) -- People visit the Asian Art Museum on Free Sunday in San Francisco, the United States, Jan. 7, 2018. (Xinhua/Wu Xiaoling/IANS)more