What does it mean to frown when you can't get rid of it?

The meaning of this poem is that this lovesickness, this sadness, has just disappeared from the frowning brow and is faintly entangled in my heart.

Excerpted from the ancient poem Plum by Li Qingzhao in Song Dynasty.

The original text of this ancient poem is lotus fragrance and jade. Gently untie Luo Shang and go to Lan alone. Who sent the brocade book, the word geese returned, and the moon was full of the West Building. Flowers bloom and fall, and flowing water gurgles. One kind of lovesickness, two places of leisure. There is no way to eliminate this situation, only frown and mind.