Aerial photo taken on Feb. 8, 2018 shows the Xuanwu Gate in Nanjing, capital city of east China's Jiangsu Province. Couplets with each approximately 15 meters high and 2 meters wide are hung on the 12 ancient city gates in Nanjing to welcome the coming Spring Festival which falls on Feb. 16. Hanging couplets on the door is a traditional way for Chinese to celebrate the Lunar New Year. (Xinhua/Li Bo)