The building gets its name from a famous song in Tang Dynasty. Debao which means that Yang Guifei was the treasure to Emperor Xuan Zong. Another legend has it that Emperor bestowed the building on Yang Guozhong, Yang Guifei's elder brother. Now it is a shop of tourist souvenirs.

Tang Emperor Xuanzong admired Zhang Guolao, a Taoist, for his magic arts which were supposed to enjoy eternal youth，and often received Zhang in the Huaqing Palace. Later Emperor ordered the construction of Guolao Chinese Herbal Hall where Zhang could study his Taoist and alchemy to make elixir of life, which would help emperor live forever. Now the Hall has changed into a herbal drugstore for tourists.