Flower Marks in the Qing Dynasty

Qingyi, Xiao Shi, Gao Yihen, and Hua Benyang grew up together in Teacher Qinghan's school. They lived together, studied together, and practiced swordsmanship together. They cherished each other and protected each other. There was a deep tacit understanding and bond between the four of them. Qingyi is the love that the three men swear to protect for life. However, the advent of war and the death of Teacher Qinghan caused the four innocent children to grow and change. Why did Xiao Shi, Yi Hen, and Ben Yang choose to leave Qingyi, whom they most wanted to protect, during the war? Is it betrayal or helplessness? Faced with this sudden change, where will Qingyi go? Reunited five years later, can they go back to the beginning? Faced with Qingyi's sadness and persistence, how should the three men choose? In the end, where does Qingyi belong?