In Dai Temple, Tiankuang (Hall of Heavenly Blessing) is the central edifice which is 9 rooms long (43.67meters), 5 rooms wide (17.18 meters), and 23.3 meters high. It is said that Tiankuang Hall was built in the Song Dynasty and rebuilt in the Qing Dynasty. People rank it together with Taihe Hall (Hall of Supreme Harmony) of the Forbidden City in Beijing, Dacheng Hall (Hall of Great Achievement) of the Confucian Temple in Qufu as the three great palatial architectures in China.

The interior wall of Tiankuang Hall is covered with a fresco painting which measures 3.3 meters tall and 62 meters long. The fresco represents a round trip of inspection by God of Mount Taishan. The fresco is divides into two distinct parts: the god departing on his tour of inspection and the god returning. The fresco was originally painted in the Song Dynasty. It is a rare and precious extant fresco in the temples of China.