Minor Heat (Chinese: 小暑), the eleventh solar term in the Chinese lunar calendar, fell on July 7 and ended on July 22 this year. It begins when the Sun reaches the celestial longitude of 105°and ends when it reaches the longitude of 120°."暑(Shu)" in Chinese means heat, and Minor Heat means it is a little bit hot, but not very hot. This term indicates the beginning of the escalating temperature, but it is still far from the hottest days. This is the situation for most parts of China. During the period of Minor Heat, most areas in the South China see the coming the period with the most thunderstorm days. [Photo by Wan Jin/Palace Museum]