That year and the moon were rolling, Rongshang gave the young Chengyou a coral bracelet and made a promise for twenty years. Twenty years later, Chengyou, who was sent to control the flood, met Rongshang again, but he had long forgotten their agreement... It turned out that he had always forgotten him for several lifetimes, and the immortal dragon Rongshang was also shackled by his forgetfulness and imprisoned for thousands of years. Maybe in this life, you won't forget me again...