People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

People take part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)

A girl takes part in the 41st San Francisco Carnival parade in San Francisco, the United States, May 26, 2019. (Xinhua/Dong Xudong)