The Song of the Shoulders (肩) in the Nine Songs of Xing Yi Quan (形意拳九歌) by Jiāng Róngqiáo (薑容樵)

肩

頭宜上頂，
肩宜下垂，
左肩成拗，
右肩自隨，
身力到手，
肩之所為。

薑容樵

"The head should push upwards.
The shoulders properly hang down.
The left shoulder is completely twisted.
The right shoulder will naturally follow.
The body’s strength will arrive at the hands.
It is the shoulder’s position that allows it."

From the book Xing Yi Mother Fists (形意母拳), by Jiāng Róngqiáo (薑容樵), based on the translation by Joseph Crandall