Liangzhou Ci and farewell songs are the works of Wang Zhihuan, a poet in the Tang Dynasty, and there is no question of who copied them.

Liangzhou Ci is a well-known poem, which describes the desolate and cold scene in Liangzhou area, thus expressing the author's longing for frontier life in the prosperous Tang Dynasty. Farewell song is a farewell song written by Wang Zhihuan, which expresses the author's affection for relatives and friends. Both songs were written by Wang Zhihuan, and there is no fake relationship between them.

In a word, "Liangzhou Ci" and "Farewell Song" are two different songs, both original works by Wang Zhihuan, and there is no question of who copied them.