On 20 19, the super-popular coloring book team, Da Mao, joined hands with Le Fei Bird, a creative developer with high value, to launch the creative gift box of "Qing Palace Drama on the Pen Tip", leading everyone to redefine the legendary story of the deep palace near the hanging flower door of the Red Palace wall a hundred years ago.

Le Fei Bird, a well-known illustration studio in China, is mainly composed of illustrators born in 1980s and 1990s. He is good at painting styles such as Q version, small freshness, warmth and healing, and his works have long been ranked first in the similar best-selling list of major bookstores in China.