Many Children, Many Blessings, Longevity Begins with Marrying the Eldest Princess

[Multiple heroines]+[Immortality]+[Invincible]+[Family]+[Pretending to be a pig and eating a tiger] Jiang Yuan traveled through Daqian for three years and thought he was the chosen one. However, he turned out to have mediocre qualifications and only had three months left to live. Although I have the system, I don't know how to activate it. Just when he was waiting for death, a piece of imperial edict fell from the sky! The emperor granted marriage to Zhao Ningyan, the sickly and frail eldest princess, and asked me to "joy the wedding"? Everyone said that I was unlucky to marry a short-lived princess, so I might as well die early. But at the moment when I knelt down to receive the order, a sudden sound came in my mind—— [It is detected that the host has established a marriage relationship...] [The conditions for starting the system of many children, many blessings and longevity are met...] Isn't it? ! The activation condition is actually "marriage"? ! Why didn't you tell me earlier? [Congratulations to the host for establishing the first blood contract, and reward the novice gift pack: Life Extension Pill (one year), Body Tempering Fluid (elementary level)]