《汉书·传·张陈王周传》
且动以编织养蚕器具为生，常给办丧事的人吹箫，以才能作引强官。
勃以织薄曲为生，常以吹箫给丧事，材官引强。
And moved to make a living by weaving and raising silkworms, often playing the flute for those who were holding funerals, and used his talent to be a strong official.