Suitable. Soft-pen calligraphy generally refers to calligraphy works created with soft pens, including brushes and soft pens. "Looking for Flowers Alone by the River" is suitable for soft-pen calligraphy works. "Searching for Flowers Alone by the River" generally refers to the seven quatrains of "Searching for Flowers Alone by the River". "Seven Quatrains of Seeking Flowers Alone by the River" is a collection of seven poems written by Du Fu, a great poet of the Tang Dynasty.