People visit an orchid expo in San Francisco, the United States, July 26, 2025. The two-day orchid expo kicked off at the Golden Gate Park in San Francisco on Saturday. (Photo by Liu Yilin/Xinhua)

People visit an orchid expo in San Francisco, the United States, July 26, 2025. The two-day orchid expo kicked off at the Golden Gate Park in San Francisco on Saturday. (Photo by Liu Yilin/Xinhua)

People visit an orchid expo in San Francisco, the United States, July 26, 2025. The two-day orchid expo kicked off at the Golden Gate Park in San Francisco on Saturday. (Photo by Liu Yilin/Xinhua)