What are the biographies of Yan Lide and Yan?

Yan Lide, whose real name is Lide, was an architect, arts and crafts artist and painter in ancient Tang Dynasty in China. Yan Lide participated in the construction of the Mountain Mausoleum, supervised the construction of Cuiwei Palace and Yuhua Palace, and built Zhaoling Mausoleum. He also presided over the construction of the outer eaves and towers of Chang 'an City in the Tang Dynasty. He is good at painting and has presided over the design of the costumes of emperors and queens.

Yan, a painter and engineer in China in the Tang Dynasty, is Yan Lide's younger brother. He is good at craftsmanship and ingenious design. He is good at calligraphy of seal script and official script, as well as painting and architecture. The figures, chariots, horses and pavilions he painted all reached a high level of painting and were respected as "masterpieces" by people at that time. In addition to his versatility, he is also very talented in politics and served as the left prime minister.