A medical staff member sticks dog-day paste onto the back of a resident at the hospital of traditional Chinese medicine in Hengshui, north China's Hebei Province, July 12, 2017. Wednesday marks the first day of the dog days, which means the three periods of the hottest season each year. People around China would swarm into hospitals of traditional Chinese medicine as they believe winter diseases could be cured in summer. (Xinhua/Zhu Xudong)
