Lovesickness Paints the Sky All over the Sky

When the sentence "The setting sun is as red as a red bean, and lovesickness is written all over the sky" became the key to connect the two time and space, the modern designer Su Xiao unexpectedly began a spiritual friendship that spanned a century with the Republic of China poet Gu Yuanzhou. On one side is a technologically advanced modern city, on the other side is a turbulent romantic era. The two gradually become each other's soul support despite being unable to meet each other. Until one day, Su Xiao discovered that she could actually travel back to Gu Yuanzhou's era for a short time, but every time she traveled, she had to pay a price... A love that spans time and space, and the collision of two parallel worlds. Can they change the fate of "not around, but controlled by you"?