Photo taken on Feb. 4, 2018 shows butterfly orchid at a farm in Caizhuang Village of Yong'an Township in Shizhong District of Zaozhuang, east China's Shandong Province. The day of "Lichun", literally meaning the beginning of the spring, falls on Feb. 4 this year. Lichun is the first of the 24 solar terms of the Chinese lunisolar calendar. (Xinhua/Sun Zhongzhe)