Photo taken on May 16, 2018 shows a public toilet on Hongta West Road in Kunming, capital of southwest China's Yunnan Province. All public toilets in Kunming have been free for public. (Xinhua/Hu Chao)

Photo taken on May 17, 2018 shows a public toilet on Qixiang Road in Kunming, capital of southwest China's Yunnan Province. All public toilets in Kunming have been free for public. (Xinhua/Hu Chao)

A work staff member introduces the baby-care table inside a public toilet on Hongta West Road in Kunming, capital of southwest China's Yunnan Province, May 16, 2018. All public toilets in Kunming have been free for public. (Xinhua/Hu Chao)