Due to its proximity to the Western Hills and the coal reserves at Mentougou District, carts carrying coal would enter the city through Fuchengmen. The barbican gate archway had an engraving of a plum flower (plum flower 梅 Mei and coal 煤 Mei are homophones in Chinese. Also, the plum trees near Fuchengmen blossom in spring, around the time when coal was no longer needed and deliveries ceased). This gives rise to the old Beijing saying: Fucheng's plum blossoms announce the arrival of the new spring's warmth. Fuchengmen is also informally referred to as 惊门 Jingmen, meaning Justice.