Yanxigong(Palace of Prolonging Happiness)Ⅱ

In fact, all the structures of the hall were iron; four columns circled by dragons in the hall of Yanxigong(Palace of Prolonging Happiness) were also made by irons. The whole architecture mostly was made by white marbles. The outer wall of Yanxigong(Palace of Prolonging Happiness) has the carved flower images and the inner wall was pasted with white and colorized ceramic bricks but the construction was forced to finish in winter of 1911 due to fund shortage. In June of 1910, Cixi once ordered to install electric warming oven, electric fan and electric lights. Exactly Yanxigong(Palace of Prolonging Happiness) was the first armored concrete building in Forbidden City. In 1917, it was bombed by warlords and in 1931 it was changed to be the storeroom of cultural antiques of Palace Museum, which is another official name of Forbidden City.