(181023) -- HUAI'AN, Oct. 23, 2018 (Xinhua) -- Farming machines are seen in the paddy field in Huanghuatang Town of Xuyi, east China's Jiangsu Province, Oct. 23, 2018, the day of the First Frost. First Frost, also known as Shuangjiang, is one of the 24 solar terms of the Chinese lunar calendar. (Xinhua/Zhou Haijun)