On a rainy day, middle-aged Wang Chutong held an umbrella alone and walked on the wet street.At a hawker stall on the corner of the street, a dazzling array of accessories caught his eye.He paused for a moment and his eyes fell on a hairpin set with red beans.

That little red bean is like a door that travels through time and space, bringing Wang Chutong's thoughts back to the distant past.

Young Wang Chutong grew up with his neighbor Liu Niang, and they were childhood sweethearts.One day, he found a red bean in the kitchen and hatched a plan. He hurried to the next door to surprise Liu Niang.Liu Niang took the red beans with great expectation, and Wang Chutong told her that these were not ordinary red beans, but the red beans written in Wang Wei's poem that carried deep lovesickness.He recited the poem - Lovesickness -: “ Red beans grow in the south, and a few branches will grow when spring comes; I hope you will pick more of them, as this is the most lovesick thing.”However, the last sentence "This thing is the most lovesick" was choked in his throat and he could never say it out.

Time flies by like a blink of an eye, and both of them have grown up in the blink of an eye.Liu Niang grew up tall and graceful and became the focus of everyone's attention.And Wang Chutong, although full of knowledge, was still a poor scholar.Although the two are in love, the gap in identity is like an insurmountable gap.

In order to prove himself, Wang Chutong studied hard, hoping that one day he would be able to get on the gold medal list and marry his beloved Liu Niang.Liu Niang, on the other hand, was looking forward to meeting Wang Chutong again day and night.However, fate often does not go as expected.

Under the arrangement of her family, Liu Niang is about to marry a man who is the right match for her.When Wang Chutong learned the news, his heart was as sharp as a knife.He hurried to Liu Niang's house and wanted to see Liu Niang, but his cowardice and inferiority prevented him from knocking on the door.Liu Niang, on the other hand, was actually behind the door, crying silently.

Before getting married, Liu Niang was embroidering a handkerchief with red bean trees and flying butterflies on it.However, because she was absent-mindedly missing Wang Chutong, she accidentally pricked her finger with the tip of a needle.A drop of blood fell on the handkerchief, soaking it together with Liu Niang's tears.She looked at the cut red thread, her heart filled with helplessness and sadness.She knew that from now on, the fate between her and Wang Chutong was over.

Liu Niang's wedding was grand and lively, and the whole city knew about it.However, as a bride, she burst into tears in the sedan chair.And Wang Chutong also failed to marry Liu Niang as he wished.He took the handkerchief Liu Niang had embroidered for him and set out on the road to the capital.The red beans and blood on the handkerchief became the deepest lovesickness and regret in his heart.