Construction of the forbidden city were conducted in parallel with the improvement of Beijing prungkrung. After you start creating did not forbidden for a long time. Forbidden city was affected by the creation of the Chang ling tomb and in 8 years to 11 years. Emperor ju city, he made war with Mongolia to slow construction of the forbidden city. 6 months to 16 years out of the Yongle era, have been devoted to create forbidden again. Mr. Carpenter with much activity sounds Mr. stone and Mr. sound engineer track changkra introduction to Yang Ching together manufacturing and assembling various parts quickly.