Introduction to Shengxin Building: Shengxin Building is located in the center of the third entrance courtyard. It is a three-story octagonal Chinese-style suanli building. The glazed spire stands tall and majestic, which is very spectacular. The muezzin building, also known as the bunker building, is the highest point where the muezzin (mueun) summons Muslims to come to the temple to pray. In traditional Arab mosques, one should be built around the temple, but the Huajuexiang Mosque has only one "xinxin building", and it is built on the central axis of the temple, reflecting its Chinese architectural characteristics. Inside the railing downstairs, there is a stone carving of two dragons playing with a pearl, which is said to be a relic of the Tang Dynasty.